Refine
Year of publication
Document Type
- Preprint (771)
- Article (725)
- Working Paper (6)
- Conference Proceeding (3)
- Doctoral Thesis (3)
- Report (2)
Has Fulltext
- yes (1510)
Is part of the Bibliography
- no (1510) (remove)
Keywords
- Heavy Ion Experiments (21)
- Hadron-Hadron scattering (experiments) (12)
- Hadron-Hadron Scattering (11)
- LHC (9)
- Heavy-ion collision (6)
- Heavy-ion collisions (5)
- ALICE experiment (4)
- Bone density (4)
- COVID-19 (4)
- Cancer (4)
- Collective Flow (4)
- Computed tomography (4)
- Depression (4)
- Jets (4)
- Magnetic resonance imaging (4)
- Osteoporosis (4)
- Quark-Gluon Plasma (4)
- ALICE (3)
- Biomarkers (3)
- Diffraction (3)
- Epilepsy (3)
- Genetics (3)
- Heavy Ions (3)
- Heavy Quark Production (3)
- Jets and Jet Substructure (3)
- Multidetector computed tomography (3)
- Seizure (3)
- Spine (3)
- acute myeloid leukemia (3)
- pp collisions (3)
- Accelerators & Beams (2)
- Acute myeloid leukemia (2)
- Algorithms (2)
- Artificial intelligence (2)
- Atomic, Molecular & Optical (2)
- Beam Energy Scan (2)
- Beauty production (2)
- Biomarker (2)
- Bipolar disorder (2)
- CT (2)
- CV9202 (2)
- Charm physics (2)
- Chiral Magnetic Effect (2)
- Cohort studies (2)
- Collectivity (2)
- Correlation (2)
- Costs (2)
- Diagnostic imaging (2)
- Elastic scattering (2)
- Elliptic flow (2)
- Experimental nuclear physics (2)
- Experimental particle physics (2)
- FGFR (2)
- Frieden (2)
- Friedenskonferenz (2)
- Immunology (2)
- Intensive care units (2)
- Lepton-Nucleon Scattering (experiments) (2)
- MRI (2)
- MSC (2)
- MSC2013 (2)
- Mitochondria (2)
- München (2)
- Neoplasms (2)
- Non-small cell lung cancer (2)
- Oncology (2)
- Osteoporotic fractures (2)
- Particle Correlations and Fluctuations (2)
- Particle and resonance production (2)
- Particle correlations and fluctuations (2)
- Pb–Pb collisions (2)
- Positron emission tomography (2)
- Pre-analytics (2)
- Psychiatric disorders (2)
- QCD (2)
- Quality of life (2)
- Quarkonium (2)
- Relativistic heavy-ion collisions (2)
- SARS-CoV-2 (2)
- Shear viscosity (2)
- Sicherheitskonferenz (2)
- Single electrons (2)
- Surgery (2)
- Tomography (2)
- Tomography (x-ray computed) (2)
- Vasculitis (2)
- apoptosis (2)
- cabozantinib (2)
- childhood acute myeloid leukemia (2)
- cirrhosis (2)
- computed tomography (2)
- growth inhibition (2)
- immunotherapy (2)
- land use (2)
- liver (2)
- lung cancer (2)
- penile cancer (2)
- portal hypertension (2)
- relapse (2)
- resistant cell lines (2)
- salvage therapy (2)
- security conference (2)
- squamous cell carcinoma (2)
- storage rings (2)
- targeted therapy (2)
- 19F (1)
- 3 mm RAS instruments (1)
- 3 mm instruments (1)
- 3years (1)
- 8 weeks (1)
- 900 GeV (1)
- ABCB1 (1)
- ABCC1 (1)
- ABCG2 (1)
- ACLF (1)
- ADGRE1 (1)
- AKI (1)
- AKT (1)
- ALICE detector (1)
- ALK-rearranged NSCLC (1)
- APRI (1)
- Ablation Techniques (1)
- Accelerators & storage rings (1)
- Acquired drug resistance (1)
- Acquired resistance (1)
- Active middle ear implants (1)
- Acuris (1)
- Acute lymphoblastic leukemia (1)
- Acute lymphocytic leukaemia (1)
- Adolescents (1)
- Age determination by skeleton (1)
- Age groups (1)
- Aktienmarkt (1)
- Alpha-synuclein (1)
- Alternative oxidase (1)
- Alzheimer (1)
- Amino acid analysis (1)
- Amyloid precursor protein (1)
- Anemia (1)
- Angiography (1)
- Angiomyolipoma (1)
- Anterior cruciate ligament (1)
- Anti-nuclei (1)
- Anti-seizure medication (1)
- Anticonvulsant (1)
- Antifungal agents (1)
- Antiretroviral therapy (1)
- Antiretrovirals (1)
- Aortic valve replacement (1)
- Applikationen (1)
- Archaeogeophysics (1)
- Artificial Intelligence (1)
- Aspergillosis (1)
- Atomic & molecular beams (1)
- Auditory system (1)
- Autofreies Wohnen (1)
- Autologous stem cell transplantation (1)
- Automated Tube Potential Selection (1)
- Autoreduziertes Wohnen (1)
- Awareness campaign (1)
- B cell receptor (1)
- B-slope (1)
- BI1361849 (1)
- Beam energy scan (1)
- Beam loss (1)
- Behavior (1)
- Behavioral disorders (1)
- Bike-Sharing (1)
- Biodiversity (1)
- Biodiversity Data (1)
- Biogeochemistry (1)
- Biological heart valves (1)
- Biomonitoring (1)
- Bioprosthesis (1)
- Biopsy (1)
- Bleeding (1)
- Blood (1)
- Blood sample handling (1)
- Bloodstream infections (1)
- Bone conduction devices (1)
- Bone disease (1)
- Bone diseases (1)
- Bone diseases, Metabolic (1)
- Bone marrow (1)
- Boosted Jets (1)
- Botanical Collections (1)
- Brachiopoda (1)
- Brachiozoa (1)
- Breathing (1)
- Bryozoa (1)
- Business strategy in drug development (1)
- C-reactive protein (1)
- CABG (1)
- CAC-DRS Score (1)
- CAD/ CAM crown (1)
- CAKUT (1)
- CNDAC (1)
- COMT (1)
- CRPC (1)
- CT dual-energy computed tomography (1)
- CT pulmonary angiography (1)
- CT radiation exposure (1)
- CT-guidance (1)
- CTLA-4 (1)
- Calcium (1)
- Cancer Staging (1)
- Cancer check up (1)
- Cancer staging (1)
- Car-Sharing (1)
- Carbon cycle (1)
- Cardiac surgery (1)
- Carsharing (1)
- Cell membranes (1)
- Central Europe (1)
- Centrality Class (1)
- Centrality Selection (1)
- Charge fluctuations (1)
- Charge-transfer collisions (1)
- Charged-particle multiplicity (1)
- Charm quark spatial diffusion coefficient (1)
- Checkpoint inhibitor (1)
- Chemicals of emerging concern (1)
- Chemoembolization (1)
- Chemotherapy (1)
- Child abuse (1)
- Childhood abuse (1)
- Children (1)
- Chiral magnetic effect (1)
- Chondral Lesion (1)
- Circular accelerators (1)
- Cirrhosis (1)
- Cleanliness level (1)
- Climate-change ecology (1)
- Clinical genetics (1)
- Clinical trial (1)
- Clinical variation (1)
- Coalescence (1)
- Cochlear implantation (1)
- Cold nuclear matter effects (1)
- Collagen Maps (1)
- Collective Flow, (1)
- Colon capsule endoscopy (1)
- Combined immune checkpoint blockade (1)
- Combo® DTS (1)
- Community ecology (1)
- Comparison with QCD (1)
- Complementation rate (1)
- Complex II (1)
- Complex posttraumatic stress disorder (1)
- Compositional bias (1)
- Computed Tomography (1)
- Computed tomography pulmonary angiography (CTPA) (1)
- Computed tomography, X-ray (1)
- Computer-aided drug design (1)
- Cone-beam computed tomography (1)
- Congenital anomalies (1)
- Consensus statement (1)
- Conservation (1)
- Conservation biology (1)
- Contrast agent (1)
- Coronary Heart Disease (1)
- Coronary Plaque Burden (1)
- Couch tracking (1)
- Critical point (1)
- Cryoelectron microscopy (1)
- DCK (1)
- DECT (1)
- DME (1)
- DNA sequence analysis (1)
- DNA taxonomy (1)
- DNA-PAINT (1)
- DSM (1)
- Darmstadt (1)
- Data sharing (1)
- Deuteron production (1)
- Di-hadron correlations (1)
- Diagnostic accuracy (1)
- Diagnostic markers (1)
- Dialectical behavioural therapy (1)
- Digitization (1)
- Direct oral anticoagulation (1)
- Direct reactions (1)
- Drug screens (1)
- Drug therapy (1)
- Dual-Source CT (1)
- Dual-energy computed tomography (1)
- EGFR (1)
- EMR1 (1)
- ETP-ALL (1)
- East–west divide (1)
- Eating disorders (1)
- Ecological modelling (1)
- Ecological networks (1)
- Ecosystem ecology (1)
- Ectoprocta (1)
- Edema (1)
- Elderly (1)
- Electric stimulation (1)
- Electron-pion identification (1)
- Electronic transitions (1)
- Electroweak interaction (1)
- Elektromobilität (1)
- Ellenberg indicator values (1)
- Embryos (1)
- Endocannabinoids (1)
- Endovascular aortic repair (1)
- Environmental impact (1)
- European stock markets (1)
- Europäische Aktienmärkte (1)
- Europäische Union (1)
- Everolimus (1)
- Evidence-based guidelines (1)
- Exudates and transudates (1)
- Eye movements (1)
- F4/80 (1)
- FBS (1)
- FFLU (1)
- FIB-4 (1)
- FLT3 (1)
- Facial nerve (1)
- Fahrradverleihsysteme (1)
- Feasibility studies (1)
- Femtoscopy (1)
- Fibre/foam sandwich radiator (1)
- Flottenkonzepte (1)
- Forest ecology (1)
- Forschung (1)
- Forward physics (1)
- Frailty (1)
- Full waveform (1)
- Functional outcomes (1)
- GPS collar (1)
- GWAS (1)
- Gastrointestinal (1)
- Gene expression (1)
- General practitioners (1)
- Gimbaled tracking (1)
- Glioblastoma survival (1)
- Global positioning system (1)
- Gram negative bacteria (1)
- Groomed jet radius (1)
- Guanine nucleotide exchange factors (1)
- Guanosine triphosphatase (1)
- HBT (1)
- HBV (1)
- HCC (1)
- HIV (1)
- HIV-1 (1)
- HNO (1)
- Hadron production (1)
- Hadron-Hadron Scattering Heavy (1)
- Hadron-hadron interactions (1)
- Hadronization (1)
- Hals-Nasen-Ohren-Heilkunde (1)
- Hard Scattering (1)
- Head and neck cancer (1)
- Health information (1)
- Health policy (1)
- Health-seeking behaviour (1)
- Heavy Ion Experiment (1)
- Heavy flavor production (1)
- Heavy flavour production (1)
- Heavy ion collisions (1)
- Heavy ions (1)
- Heavy-Ion Collision (1)
- Heavy-flavor decay electron (1)
- Heavy-flavour decay muons (1)
- Heavy-flavour production (1)
- Hedgehog pathway (1)
- Helpline (1)
- Hematologic malignancies (1)
- Hematology (1)
- Hematopoietic stem cell transplantation (1)
- Hepatitis C virus (1)
- Herbaria (1)
- Herniated disk (1)
- Hif-1 alpha (1)
- High-dose chemotherapy (1)
- Higher moments (1)
- Hodgkin lymphoma (1)
- Hsp70 (1)
- Hypertension (1)
- Hypochondriasis (1)
- Hypofractionated radiotherapy (1)
- ICL (1)
- ICL V4c (1)
- IHC (1)
- ILUVIEN (1)
- INR (1)
- Image processing (1)
- Image processing (computer-assisted) (1)
- Immunogenetics (1)
- Immunomonitoring (1)
- In-TIPS thrombosis (1)
- Inclusive spectra (1)
- Incomplete colonoscopy (1)
- Inflammation (1)
- Intensity interferometry (1)
- Interference fragmentation function (1)
- International normalized ratio (1)
- Interpretation (1)
- Intervertebral disc displacement (1)
- Intrinsic resistance (1)
- Invariant Mass Distribution (1)
- Invasive candidiasis (1)
- Inversion (1)
- Ionisation energy loss (1)
- Ipilimumab (1)
- J/ψ suppression (1)
- Jet Physics (1)
- Jet Substructure (1)
- Jet substructure (1)
- K3EDTA plasma sampling (1)
- KDIGO (1)
- Kidney (1)
- Knee joint (1)
- Knockout (1)
- Kryptrochozoa (1)
- LVSPE (1)
- Ladeinfrastruktur (1)
- Lehre (1)
- Lenalidomide (1)
- Leukemia (1)
- Leukemias (1)
- Library screening (1)
- Lincoln-Siedlung (1)
- Lipidol (1)
- Lipidomics (1)
- Liver (1)
- Liver diseases (1)
- Liver transplantation (1)
- Local control (1)
- Lophophorata (1)
- Low & intermediate-energy accelerators (1)
- Low volume prep (1)
- Low-molecular-weight heparin (1)
- Luciferase (1)
- Lumbar Disk Degeneration (1)
- MALAT1 (1)
- MEDIC (1)
- MLC tracking (1)
- MTOR inhibitor (1)
- MYC (1)
- Magnetic resonance Imaging (1)
- Mass spectrometry (1)
- Mastoiditis (1)
- Material budget (1)
- Medical Oncology (1)
- Medical Physics: Diagnostic (1)
- Melanoma (1)
- Mental health and psychiatry (1)
- Meriç River (1)
- Metabolic (1)
- Metabolomics (1)
- Metastasis (1)
- Micropollutants (1)
- Mid-rapidity (1)
- Minimum Bias (1)
- Mitfahrangebote (1)
- Mitochondrial disease (1)
- Mitoxantrone (1)
- Mixed hearing loss (1)
- Mixture risk assessment (1)
- Mobil-Stationen (1)
- Mobilität (1)
- Mobilitätskonzept (1)
- Mobilitätsstationen (1)
- Mobilitätsverhalten (1)
- Model of evolution (1)
- Molecular diagnostic testing (1)
- Monte Carlo (1)
- Moviprep (1)
- Multi-Parton Interactions (1)
- Multi-stakeholder approach (1)
- Multi-strange baryons (1)
- Multi-wire proportional drift chamber (1)
- Multidetector Computed Tomography (1)
- Multifaktorenmodelle (1)
- Multimodalität (1)
- Multiple factor models (1)
- Multiple myeloma (1)
- Multiple parton interactions (1)
- Multivariate analysis (1)
- Mutation databases (1)
- Mycoses (1)
- Myocarditis (1)
- Myopia (1)
- NAFLD (1)
- NK cells (1)
- NMR spectroscopy (1)
- NOTCH (1)
- NOTCH1 (1)
- NSF (1)
- NVBP (1)
- Net-charge correlations (1)
- Net-charge fluctuations (1)
- Neural network (1)
- Neuronal morphology (1)
- Neuroscience (1)
- Neutropenia (1)
- Nivolumab (1)
- Nuclear modification factor (1)
- Nuclear reactions (1)
- Nuclear structure & decays (1)
- Nucleon induced nuclear reactions (1)
- ORL (1)
- Obsessive-compulsive disorder (1)
- Oldest-old (1)
- Organ motion (1)
- Otorhinolaryngology (1)
- Oxidative phosphorylation (1)
- Oxygen (1)
- PD-1 (1)
- PD-L1 (1)
- PLX4032 (1)
- PLX4720 (1)
- PRoMPT (1)
- PSA screening (1)
- PSA-Screening (1)
- PTEN (1)
- PYTHIA (1)
- Parken (1)
- Parkinson’s disease (1)
- Particle and Resonance Production (1)
- Patellofemoral Joint (1)
- Patterns of care (1)
- Pb–Pb (1)
- Pedelecs (1)
- Personenmobilität (1)
- Phakic (1)
- Phantoms (imaging) (1)
- Phoronida (1)
- Phosphate (1)
- Phospho-soda (1)
- Phosphorylation (1)
- Photon counting (1)
- Phylloscopidae (1)
- Phylloscopus (1)
- Phylogeography (1)
- PillCamColon2 (1)
- Plasma (1)
- Point-of-care testing (1)
- Polarization (1)
- Polyps (1)
- Polysomnography (1)
- Polyzoa (1)
- Positive fluid balance (1)
- Post-processing (1)
- Post-traumatic stress disorder (1)
- Posterior cruciate ligament (1)
- Postoperative atrial fibrillation (1)
- Preventive medicine (1)
- Production Cross Section (1)
- Properties of Hadrons (1)
- Prostata-specific antigen (1)
- Prostataspezifisches Antigen (1)
- Proton-proton collisions (1)
- Proton–proton (1)
- Proton–proton collisions (1)
- Prävention (1)
- Pseudarthrosis (1)
- Psoriasis vulgaris (1)
- Psychological and psychosocial issues (1)
- Pulmonary embolism (1)
- QGP (1)
- QSARs (1)
- Quantitative Imaging (1)
- Quark Deconfinement (1)
- Quark Gluon Plasma (1)
- Quark Production (1)
- Quark gluon plasma (1)
- RHIC (1)
- RNA (1)
- RNA, long noncoding (1)
- RNActive (1)
- RSL curve (1)
- Radiation detectors (1)
- Radical prostatectomy (1)
- Radiology (1)
- Radiomics (1)
- Radiotherapy (1)
- Randomised controlled trial (1)
- Rapidity Range (1)
- Rare diseases (1)
- Region Rhein-Main (1)
- Registries (1)
- Rehabilitation (1)
- Relapse (1)
- Relativistic heavy ion physics (1)
- Renal cell carcinoma (1)
- Research (1)
- Research Infrastructure (1)
- Residency (1)
- Resolution Parameter (1)
- Respiration (1)
- Respiratory chain (1)
- Retro-IDEAL (1)
- Retrospective studies (1)
- Retrospective study (1)
- Rhabdomyoma (1)
- Ribosome (1)
- Risk drivers (1)
- River pollution (1)
- Robotic tracking (1)
- SAMHD1 (1)
- SARS-CoV-2 Pneumonia (1)
- SARS-CoV‑2 pandemic (1)
- SARS-CoV‑2-Pandemie (1)
- SCCHN (1)
- SLC20A1 (1)
- SMAD (1)
- SPSS (1)
- STAR (1)
- STIR (1)
- Salivary gland carcinoma (1)
- Sampling protocol (1)
- Sapacitabine (1)
- Second-line treatment (1)
- Seicercus (1)
- Semantics (1)
- Senescence (1)
- Sequence (1)
- Serum (1)
- Shell model (1)
- Single muons (1)
- Sleep (1)
- Sleep deprivation (1)
- Small molecules (1)
- Social anxiety disorder (1)
- Sociodemographic characteristics (1)
- SoftDrop (1)
- Specialist training (1)
- Spectroscopic factors & electromagnetic moments (1)
- Spinal fractures (1)
- Spine density (1)
- Splitting function (1)
- Stenotrophomonas maltophilia (1)
- Steroid (1)
- Subependymal giant cell astrocytoma (1)
- Surface waters (1)
- Surveys (1)
- Survival analysis (1)
- Survival data (1)
- Systematic Uncertainty (1)
- Systemic treatment (1)
- T-ALL (1)
- TGFβ (1)
- TGR(mREN2)27 (1)
- TIPS (1)
- TP53 mutation status (1)
- TR (1)
- TSC (1)
- Target screening (1)
- Targeted therapy (1)
- Taxonomy (1)
- Teaching (1)
- Technical data (1)
- Telemedicine (1)
- Territorial songs (1)
- Therapeutic anticoagulation (1)
- Thermal model (1)
- Thoracic aortic aneurysm (1)
- Time Projection Chamber (1)
- Tracking (1)
- Traditional Chinese Medicine (TCM) (1)
- Transcriptome analysis (1)
- Transition radiation detector (1)
- Transjugular Intrahepatic Portosystemic Shunt (1)
- Transverse momentum (1)
- Transversity (1)
- Treatment (1)
- Trigger (1)
- Tyrosine kinase inhibitor mTOR inhibition (1)
- USP28 (1)
- Umweltbilanz (1)
- University hospitals (1)
- Universitätskliniken (1)
- Urinary continence (1)
- Urinary incontinence (1)
- Ursus arctos (1)
- Uveal melanoma (1)
- VEGFR (1)
- Vaccination (1)
- Valve surgery (1)
- Vector Boson Production (1)
- Vemurafenib (1)
- Vesicles (1)
- Vincristine (1)
- Virtual noncalcium reconstructions (1)
- Vorsorgeuntersuchung (1)
- Weiterbildung (1)
- Western diet (1)
- Wohnumzug (1)
- Workstation comparison (1)
- X-ray computed (1)
- X-rays (1)
- Xenon-based gas mixture (1)
- abdominal imaging (1)
- accessory proteins (1)
- acoustic radiation force impulse imaging (1)
- activity sensors (1)
- acute decompensation (1)
- acute lymphoblastic leukemia (1)
- acute-on-chronic liver failure (1)
- adjuvant chemotherapy (1)
- aegean (1)
- age (1)
- amino acids (1)
- amphiregulin (1)
- amygdalin (1)
- anaplastic large cell lymphoma (1)
- angiography (1)
- anterior chamber depth changes (1)
- anti-EGFR therapy (1)
- antiepileptic drugs (1)
- antimicrobial stewardship (1)
- antiviral therapy (1)
- aortic stenosis (1)
- archeological sea-level limiting points (1)
- artesunate (ART) (1)
- artifacts (1)
- artificial intelligence (1)
- attention-deficit/hyperactivity disorder (ADHD) (1)
- autophagy (1)
- bacterial leakage (1)
- beads (1)
- bioactivity testing (1)
- biogeographic legaciese (1)
- bioindication (1)
- biomarker (1)
- bladder cancer (BCa) (1)
- bladder exstrophy-epispadias complex (1)
- breast cancer (1)
- brown bear (1)
- c-MET (1)
- cabazitaxel (1)
- carbapenem resistance (1)
- cardiac arrest (1)
- cardiac remodeling (1)
- case study (1)
- castration resistance (1)
- cataract surgery (1)
- cell lines (1)
- cell therapy (1)
- cell-free protein synthesis (1)
- characteristic species (1)
- chemorefractory metastatic colorectal cancer (1)
- children and adolescents (1)
- chronic total occlusion (1)
- cilia (1)
- cisplatin resistance (1)
- cloacal malformation (1)
- coastal geomorphology (1)
- colorectal cancer (1)
- complementary/alternative medicine (CAM) (1)
- computer tomography (1)
- computer-assisted (1)
- conical coupling (1)
- conometric connection (1)
- corneas (1)
- cryptic species (1)
- cytarabine dose (1)
- dE/dx (1)
- data quality (1)
- depression (1)
- deswelling (1)
- detector (1)
- diagnostic imaging (1)
- differentiating species (1)
- disease prevalence (1)
- docetaxel (1)
- docetaxel (DX) resistance (1)
- drug resistance (1)
- dual-energy (1)
- easyPACId (1)
- ectosomes (1)
- effective lens position (1)
- elderly (1)
- electrical resistivity tomography (1)
- electroencephalography (EEG) (1)
- eltrombopag (1)
- energy-dispersive x-ray spectroscopy (1)
- epigenomics (1)
- epiregulin (1)
- ethical trade-off (1)
- eutrophication (1)
- excitation (1)
- exosomes (1)
- experimental results (1)
- explainable AI (1)
- extinction (1)
- extracellular vesicles (1)
- fear conditioning (1)
- fibrotest (1)
- fluorine (1)
- foraminifera (1)
- foraminifers (1)
- forest classification (1)
- forest functional similarity (1)
- fragment-based screening (1)
- functional genetics (1)
- gadobutrol (1)
- gene family (1)
- genetic generalized epilepsy (1)
- genome evolution (1)
- geophysical prospections (1)
- germ cell tumors (1)
- glecaprevir (1)
- glioblastoma (1)
- glioblastoma survival (1)
- global change (1)
- graft rejection (1)
- graft-versus host (1)
- grasshopper communities (1)
- guidelines (1)
- habitat destruction (1)
- head-and-neck cancer (1)
- health information exchange (1)
- healthcare (1)
- heart failure (1)
- heavy ion experiments (1)
- heavy-ion collisions (1)
- hepatic encephalopathy (1)
- hepatitis C virus (1)
- hepatocellular carcinoma (1)
- high-pitch (1)
- highly-charged ions (1)
- histology (1)
- hospital exemption (1)
- human cytomegalovirus (1)
- human knockout model (1)
- hypertension, pulmonary (1)
- immune checkpoint blockade (1)
- immune checkpoint inhibitor (ICI) (1)
- immunity (1)
- immunohistochemistry (1)
- in vivo dosimetry (1)
- infection control (1)
- integrative taxonomy (1)
- interoperability (1)
- interventional radiology (1)
- intraarterial therapy (1)
- intrinsically disordered region (1)
- invasive species (1)
- iron chelation (1)
- ischemic type biliary lesions (1)
- keratoplasty (1)
- kidney formation (1)
- kinase inhibitor (1)
- knockout mouse (1)
- lamotrigine (1)
- learning (1)
- levetiracetam (1)
- liver fibrosis (1)
- liver metastases (1)
- liver metastasis (1)
- liver transplantation (1)
- livermetastases of colorectal cancer (1)
- local radiotherapy (1)
- locoregional chemotherapy (1)
- long non-coding RNA (1)
- low-dose imaging (1)
- mRNA active cancer immunotherapy (1)
- mRNA vaccine (1)
- mTOR (1)
- mTOR inhibitor (1)
- macrophage (1)
- magnetic gradiometry (1)
- marginal fit (1)
- marker (1)
- medial prefrontal cortex (mPFC) (1)
- memory consolidation and extinction (1)
- mesenchymal stromal cell (1)
- metastasis (1)
- metastatic prostate cancer (1)
- microdosing (1)
- microkeratome (1)
- microlaparoscopy (1)
- micropalaeontology (1)
- microparticles (1)
- microvesicles (1)
- minimal information requirements (1)
- minimally invasive surgery (1)
- molecular characteristics (1)
- mortality (1)
- motility (1)
- multicenter study (1)
- multidetector computed tomography (1)
- multivariate mixed model (1)
- natural products (1)
- necroptosis (1)
- neovascularization, physiologic (1)
- neutralizing antibodies (1)
- nitrogen deposition (1)
- nocardia (1)
- nocardiosis (1)
- non-invasive fibrosis assessment (1)
- non-small cell lung cancer (1)
- nonstructural proteins (1)
- optical coherence tomography (1)
- orthology (1)
- orthopic liver transplantation (1)
- ovary (1)
- p+p collisions (1)
- pIOL (1)
- pediatric (1)
- pediatric patients (1)
- pediatric robotic surgery (1)
- personality (1)
- pharmacoresistance (1)
- phylogenetic community distance (1)
- phylogenetic signal (1)
- pibrentasvir (1)
- point shear wave elastography (1)
- portal vein (1)
- portosystemic shunt (1)
- predictive biomarkers (1)
- prognostic biomarker (1)
- prostate cancer (1)
- prostate cancer (PCa) (1)
- proteins (1)
- proteobacteria (1)
- proteomics (1)
- pseudoexfoliative syndrome (1)
- pulmonary embolism (1)
- pulmonary nocardiosis (1)
- qualitative research (1)
- quality control (1)
- quantum electrodynamics test (1)
- quark gluon plasma (1)
- radiation dosage (1)
- radiation dosimetry (1)
- radiation protection (1)
- radiomics (1)
- rare diseases (1)
- rats (1)
- re-exposure (1)
- rechallenge (1)
- recurrence pattern (1)
- refractory aGvHD (1)
- reintroduction (1)
- relativistic collisions (1)
- renal impairment (1)
- repeatability (1)
- reproducibility (1)
- resistance (1)
- retrospective trial (1)
- rigor (1)
- robotically assisted surgery (1)
- robotics (1)
- schizophrenia (1)
- sea-level indicator (1)
- semi-dry grassland (1)
- sequential ALK-inhibitor therapy (1)
- sex (1)
- shikonin (SHI) (1)
- simplified production (1)
- single subject classification (1)
- smart home (1)
- smart living (1)
- soil nutrients (1)
- song evolution (1)
- spectra (1)
- sphingolipids (1)
- spike protein (1)
- spontaneous portosystemic shunt (1)
- stage II/III colorectal cancer (1)
- standardization (1)
- steroid-resistant aGvHD (1)
- strong Coulomb field (1)
- structural habitat types (1)
- structural proteins (1)
- survival (1)
- temporal classification (1)
- testis (1)
- therapeutic anticoagulation (1)
- thrombopietin receptor agonist (1)
- thrombosis (1)
- tivantinib (1)
- transcranial magnetic stimulation (TMS) (1)
- transient elastography (1)
- transmission (1)
- transplantation (1)
- treatment resistance (1)
- tropical forests (1)
- trust (1)
- trustworthy AI (1)
- tumor microenvironment (1)
- tyrosine kinase inhibitor (TKI) (1)
- urinary tract development (1)
- uveal melanoma (1)
- valproic acid (1)
- variants of concern (1)
- vegetation-plot data (1)
- web of things (1)
- whole-genome sequencing (1)
- x-ray techniques (1)
- zebrafish development (1)
- Öffentlichkeit (1)
- ΔNp63 (1)
- Υ suppression (1)
- √sN N = 2.76 TeV (1)
Institute
- Physik (1127)
- Frankfurt Institute for Advanced Studies (FIAS) (1059)
- Informatik (928)
- Medizin (176)
- Geowissenschaften (39)
- Institut für Ökologie, Evolution und Diversität (14)
- Biowissenschaften (13)
- Biodiversität und Klima Forschungszentrum (BiK-F) (10)
- Senckenbergische Naturforschende Gesellschaft (8)
- ELEMENTS (7)
The first study of ϕ-meson production in p–Pb collisions at forward and backward rapidity, at a nucleon–nucleon centre-of-mass energy √sNN=5.02 TeV, has been performed with the ALICE apparatus at the LHC. The ϕ-mesons have been identified in the dimuon decay channel in the transverse momentum (pT) range 1<pT<7 GeV/c, both in the p-going (2.03<y<3.53) and the Pb-going (−4.46<y<−2.96) directions — where y stands for the rapidity in the nucleon–nucleon centre-of-mass — the integrated luminosity amounting to 5.01±0.19 nb−1 and 5.81±0.20 nb−1, respectively, for the two data samples. Differential cross sections as a function of transverse momentum and rapidity are presented. The forward–backward ratio for ϕ-meson production is measured for 2.96<|y|<3.53, resulting in a ratio ∼0.5 with no significant pT dependence within the uncertainties. The pT dependence of the ϕ nuclear modification factor RpPb exhibits an enhancement up to a factor 1.6 at pT=3–4 GeV/c in the Pb-going direction. The pT dependence of the ϕ-meson cross section in pp collisions at √s=2.76 TeV, which is used to determine a reference for the p–Pb results, is also presented here for 1<pT<5 GeV/c and 2.5<y<4, for a 78±3 nb−1 integrated luminosity sample.
ϕ meson measurements provide insight into strangeness production, which is one of the key observables for the hot medium formed in high-energy heavy-ion collisions. ALICE measured ϕ production through its decay in muon pairs in Pb–Pb collisions at sNN−−−√=2.76 TeV in the intermediate transverse momentum range 2<pT<5 GeV/c and in the rapidity interval 2.5<y<4. The ϕ yield was measured as a function of the transverse momentum and collision centrality. The nuclear modification factor was obtained as a function of the average number of participating nucleons. Results were compared with the ones obtained via the kaon decay channel in the same pT range at midrapidity. The values of the nuclear modification factor in the two rapidity regions are in agreement within uncertainties.
Inclusive ϒ(1S) and ϒ(2S) production have been measured in Pb–Pb collisions at the centre-of-mass energy per nucleon–nucleon pair √sNN = 5.02 TeV, using the ALICE detector at the CERN LHC. The ϒ mesons are reconstructed in the centre-of-mass rapidity interval 2.5 < y < 4 and in the transversemomentum range pT < 15 GeV/c, via their decays to muon pairs. In this Letter, we present results on the inclusive ϒ(1S) nuclear modification factor RAA as a function of collision centrality, transverse momentum and rapidity. The ϒ(1S) and ϒ(2S) RAA, integrated over the centrality range 0–90%, are 0.37± 0.02(stat) ± 0.03(syst) and 0.10 ± 0.04(stat) ± 0.02(syst), respectively, leading to a ratio Rϒ(2S) AA /Rϒ(1S) AA of 0.28±0.12(stat)±0.06(syst). The observed ϒ(1S) suppression increases with the centrality of the collision and no significant variation is observed as a function of transverse momentum and rapidity.
Inclusive Υ(1S) and Υ(2S) production have been measured in Pb-Pb collisions at the centre-of-mass energy per nucleon-nucleon pair sNN−−−√=5.02 TeV, using the ALICE detector at the CERN LHC. The Υ mesons are reconstructed in the centre-of-mass rapidity interval 2.5<y<4 and in the transverse-momentum range pT<15 GeV/c, via their decays to muon pairs. In this Letter, we present results on the inclusive Υ(1S) nuclear modification factor RAA as a function of collision centrality, transverse momentum and rapidity. The Υ(1S) and Υ(2S) RAA, integrated over the centrality range 0-90%, are 0.37±0.02(stat)±0.03(syst) and 0.10±0.04(stat)±0.02(syst), respectively, leading to a ratio RΥ(2S)AA/RΥ(1S)AA of 0.28±0.12(stat)±0.06(syst). The observed Υ(1S) suppression increases with the centrality of the collision and no significant variation is observed as a function of transverse momentum and rapidity.
Inclusive Υ(1S) and Υ(2S) production have been measured in Pb-Pb collisions at the centre-of-mass energy per nucleon-nucleon pair sNN−−−√=5.02 TeV, using the ALICE detector at the CERN LHC. The Υ mesons are reconstructed in the centre-of-mass rapidity interval 2.5<y<4 and in the transverse-momentum range pT<15 GeV/c, via their decays to muon pairs. In this Letter, we present results on the inclusive Υ(1S) nuclear modification factor RAA as a function of collision centrality, transverse momentum and rapidity. The Υ(1S) and Υ(2S) RAA, integrated over the centrality range 0-90%, are 0.37±0.02(stat)±0.03(syst) and 0.10±0.04(stat)±0.02(syst), respectively, leading to a ratio RΥ(2S)AA/RΥ(1S)AA of 0.28±0.12(stat)±0.06(syst). The observed Υ(1S) suppression increases with the centrality of the collision and no significant variation is observed as a function of transverse momentum and rapidity.
ϒ production in p–Pb interactions is studied at the centre-of-mass energy per nucleon–nucleon collision √sNN = 8.16 TeV with the ALICE detector at the CERN LHC. The measurement is performed reconstructing bottomonium resonances via their dimuon decay channel, in the centre-of-mass rapidity intervals 2.03 < ycms < 3.53 and −4.46 < ycms < −2.96, down to zero transverse momentum. In this work, results on the ϒ(1S) production cross section as a function of rapidity and transverse momentum are presented. The corresponding nuclear modification factor shows a suppression of the ϒ(1S) yields with respect to pp collisions, both at forward and backward rapidity. This suppression is stronger in the low transverse momentum region and shows no significant dependence on the centrality of the interactions. Furthermore, the ϒ(2S) nuclear modification factor is evaluated, suggesting a suppression similar to that of the ϒ(1S). A first measurement of the ϒ(3S) has also been performed. Finally, results are compared with previous ALICE measurements in p–Pb collisions at √sNN = 5.02 TeV and with theoretical calculations.
Υ production in p-Pb interactions is studied at the centre-of-mass energy per nucleon-nucleon collision sNN−−−√ = 8.16 TeV with the ALICE detector at the CERN LHC. The measurement is performed reconstructing bottomonium resonances via their dimuon decay channel, in the centre-of-mass rapidity intervals 2.03<ycms<3.53 and −4.46<ycms<−2.96, down to zero transverse momentum. In this work, results on the inclusive Υ(1S) production cross section as a function of rapidity and transverse momentum are presented. The corresponding nuclear modification factor shows a suppression of the Υ(1S) yields with respect to pp collisions, both at forward and backward rapidity. This suppression is stronger in the low transverse momentum region and shows no significant dependence on the centrality of the interactions. Furthermore, the Υ(2S) nuclear modification factor is also evaluated, suggesting a suppression similar to that of the Υ(1S). A first measurement of the Υ(3S) has also been performed. Finally, results are compared with previous measurements performed by ALICE in p-Pb collisions at sNN−−−√ = 5.02 TeV and with theoretical calculations.
Υ production in p-Pb interactions is studied at the centre-of-mass energy per nucleon-nucleon collision sNN−−−√ = 8.16 TeV with the ALICE detector at the CERN LHC. The measurement is performed reconstructing bottomonium resonances via their dimuon decay channel, in the centre-of-mass rapidity intervals 2.03<ycms<3.53 and −4.46<ycms<−2.96, down to zero transverse momentum. In this work, results on the inclusive Υ(1S) production cross section as a function of rapidity and transverse momentum are presented. The corresponding nuclear modification factor shows a suppression of the Υ(1S) yields with respect to pp collisions, both at forward and backward rapidity. This suppression is stronger in the low transverse momentum region and shows no significant dependence on the centrality of the interactions. Furthermore, the Υ(2S) nuclear modification factor is also evaluated, suggesting a suppression similar to that of the Υ(1S). A first measurement of the Υ(3S) has also been performed. Finally, results are compared with previous measurements performed by ALICE in p-Pb collisions at sNN−−−√ = 5.02 TeV and with theoretical calculations.
ϒ production and nuclear modification at forward rapidity in Pb–Pb collisions at √sNN = 5.02TeV
(2021)
The production of ϒ mesons in Pb–Pb collisions at a centre-of-mass energy per nucleon pair √sNN = 5.02 TeV is measured with the muon spectrometer of the ALICE detector at the LHC. The yields as well as the nuclear modification factors are determined in the forward rapidity region 2.5 < y < 4.0, as a function of rapidity, transverse momentum and collision centrality. The results show that the production of the ϒ(1S) meson is suppressed by a factor of about three with respect to the production in proton–proton collisions. For the first time, a significant signal for the ϒ(2S) meson is observed at forward rapidity, indicating a suppression stronger by about a factor 2–3 with respect to the ground state. The measurements are compared with transport, hydrodynamic, comover and statistical hadronisation model calculations.
ϒ production and nuclear modification at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV
(2021)
The production of Υ mesons in Pb-Pb collisions at a centre-of-mass energy per nucleon pair sNN−−−√ = 5 TeV is measured with the muon spectrometer of the ALICE detector at the LHC. The yields as well as the nuclear modification factors are determined in the forward rapidity region 2.5<y<4.0, as a function of rapidity, transverse momentum and collision centrality. The results show that the production of the Υ(1S) meson is suppressed by a factor of about three with respect to the production in proton-proton collisions. For the first time, a significant signal for the Υ(2S) meson is observed at forward rapidity, indicating a suppression stronger by about a factor 2-3 with respect to the ground state. The measurements are compared with transport, hydrodynamic, comover and statistical hadronisation model calculations.
ϒ production and nuclear modification at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV
(2020)
The production of Υ mesons in Pb-Pb collisions at a centre-of-mass energy per nucleon pair sNN−−−√ = 5 TeV is measured with the muon spectrometer of ALICE at the LHC. The yields as well as the nuclear modification factors are determined in the forward rapidity region 2.5<y<4.0, as a function of rapidity, transverse momentum and collision centrality. The results show that the production of Υ(1S) is suppressed by a factor of about three with respect to the production in proton-proton collisions. For the first time, a significant Υ(2S) signal is observed at forward rapidity, indicating a suppression stronger by about a factor 2-3 with respect to the ground state. The measurements are compared with transport, hydrodynamic, comover and statistical hadronisation model calculations.
Results are presented on Omega production in central Pb+Pb collisions at 40 and 158 AGeV beam energy. Given are transverse-mass spectra, rapidity distributions, and total yields for the sum Omega+Antiomega at 40 AGeV and for Omega and Antiomega separately at 158 AGeV. The yields are strongly under-predicted by the string-hadronic UrQMD model and are in better agreement with predictions from a hadron gas models. PACS numbers: 25.75.Dw
The first measurement of ϕ-meson production in p-Pb collisions at a nucleon-nucleon centre-of-mass energy sNN−−−√ = 5.02 TeV has been performed with the ALICE apparatus at the LHC. The ϕ-mesons have been identified in the dimuon decay channel in the transverse momentum (pT) range 1<pT<7 GeV/c, both in the p-going (2.03<y<3.53) and the Pb-going (−4.46<y<−2.96) directions, where y stands for the rapidity in the nucleon-nucleon centre-of-mass. Differential cross sections as a function of transverse momentum and rapidity are presented. The forward-backward asymmetry for ϕ-meson production is measured for 2.96<|y|<3.53, resulting in a factor ∼0.5 with no significant pT dependence within the uncertainties. The pT dependence of the ϕ nuclear modification factor RpPb exhibits an enhancement up to a factor 1.6 at pT = 3-4 GeV/c in the Pb-going direction. The pT dependence of the ϕ-meson cross section in pp collisions at s√ = 2.76 TeV, which is used to determine a reference for the p-Pb results, is also presented here for 1<pT<5 GeV/c and 2.5<y<4.
The first study of ϕ-meson production in p-Pb collisions at forward and backward rapidity, at a nucleon-nucleon centre-of-mass energy sNN−−−√=5.02~TeV, has been performed with the ALICE apparatus at the LHC. The ϕ-mesons have been identified in the dimuon decay channel in the transverse momentum (pT) range 1<pT<7 GeV/c, both in the p-going (2.03<y<3.53) and the Pb-going (−4.46<y<−2.96) directions, where y stands for the rapidity in the nucleon-nucleon centre-of-mass, the integrated luminosity amounting to 5.01±0.19~nb−1 and 5.81±0.20~nb−1, respectively, for the two data samples. Differential cross sections as a function of transverse momentum and rapidity are presented. The forward-backward ratio for ϕ-meson production is measured for 2.96<|y|<3.53, resulting in a ratio ∼0.5 with no significant pT dependence within the uncertainties. The pT dependence of the ϕ nuclear modification factor RpPb exhibits an enhancement up to a factor 1.6 at pT = 3-4 GeV/c in the Pb-going direction. The pT dependence of the ϕ-meson cross section in pp collisions at s√ = 2.76 TeV, which is used to determine a reference for the p-Pb results, is also presented here for 1<pT<5 GeV/c and 2.5<y<4 for a 78±3~nb−1 integrated luminosity sample.
The first study of ϕ-meson production in p-Pb collisions at forward and backward rapidity, at a nucleon-nucleon centre-of-mass energy sNN−−−√=5.02~TeV, has been performed with the ALICE apparatus at the LHC. The ϕ-mesons have been identified in the dimuon decay channel in the transverse momentum (pT) range 1<pT<7 GeV/c, both in the p-going (2.03<y<3.53) and the Pb-going (−4.46<y<−2.96) directions, where y stands for the rapidity in the nucleon-nucleon centre-of-mass, the integrated luminosity amounting to 5.01±0.19~nb−1 and 5.81±0.20~nb−1, respectively, for the two data samples. Differential cross sections as a function of transverse momentum and rapidity are presented. The forward-backward ratio for ϕ-meson production is measured for 2.96<|y|<3.53, resulting in a ratio ∼0.5 with no significant pT dependence within the uncertainties. The pT dependence of the ϕ nuclear modification factor RpPb exhibits an enhancement up to a factor 1.6 at pT = 3-4 GeV/c in the Pb-going direction. The pT dependence of the ϕ-meson cross section in pp collisions at s√ = 2.76 TeV, which is used to determine a reference for the p-Pb results, is also presented here for 1<pT<5 GeV/c and 2.5<y<4 for a 78±3~nb−1 integrated luminosity sample.
ϕ meson measurements provide insight into strangeness production, which is one of the key observables for the hot medium formed in high-energy heavy-ion collisions. ALICE measured ϕ production through its decay in muon pairs in Pb-Pb collisions at sNN−−−√ = 2.76 TeV in the intermediate transverse momentum range 2<pT<5 GeV/c and in the rapidity interval 2.5<y<4. The ϕ yield was measured as a function of the transverse momentum and collision centrality. The nuclear modification factor was obtained as a function of the average number of participating nucleons. Results were compared with the ones obtained via the kaon decay channel in the same pT range at midrapidity. The values of the nuclear modification factor in the two rapidity regions are in agreement within uncertainties.
ϕ meson measurements provide insight into strangeness production, which is one of the key observables for the hot medium formed in high-energy heavy-ion collisions. ALICE measured ϕ production through its decay in muon pairs in Pb-Pb collisions at sNN−−−√ = 2.76 TeV in the intermediate transverse momentum range 2<pT<5 GeV/c and in the rapidity interval 2.5<y<4. The ϕ yield was measured as a function of the transverse momentum and collision centrality. The nuclear modification factor was obtained as a function of the average number of participating nucleons. Results were compared with the ones obtained via the kaon decay channel in the same pT range at midrapidity. The values of the nuclear modification factor in the two rapidity regions are in agreement within uncertainties.
Hadronic resonances are used to probe the hadron gas produced in the late stage of heavy-ion collisions since they decay on the same timescale, of the order of 1 to 10 fm/c, as the decoupling time of the system. In the hadron gas, (pseudo)elastic scatterings among the products of resonances that decayed before the kinetic freeze-out and regeneration processes counteract each other, the net effect depending on the resonance lifetime, the duration of the hadronic phase, and the hadronic cross sections at play. In this context, the Σ(1385)± particle is of particular interest as models predict that regeneration dominates over rescattering despite its relatively short lifetime of about 5.5 fm/c. The first measurement of the Σ(1385)± resonance production at midrapidity in Pb-Pb collisions at sNN−−−√=5.02 TeV with the ALICE detector is presented in this Letter. The resonances are reconstructed via their hadronic decay channel, Λπ, as a function of the transverse momentum (pT) and the collision centrality. The results are discussed in comparison with the measured yield of pions and with expectations from the statistical hadronization model as well as commonly employed event generators, including PYTHIA8/Angantyr and EPOS3 coupled to the UrQMD hadronic cascade afterburner. None of the models can describe the data. For Σ(1385)±, a similar behaviour as K∗(892)0 is observed in data unlike the predictions of EPOS3 with afterburner.
Hadronic resonances are used to probe the hadron gas produced in the late stage of heavy-ion collisions since they decay on the same timescale, of the order of 1 to 10 fm/c, as the decoupling time of the system. In the hadron gas, (pseudo)elastic scatterings among the products of resonances that decayed before the kinetic freeze-out and regeneration processes counteract each other, the net effect depending on the resonance lifetime, the duration of the hadronic phase, and the hadronic cross sections at play. In this context, the Σ(1385)± particle is of particular interest as models predict that regeneration dominates over rescattering despite its relatively short lifetime of about 5.5 fm/c. The first measurement of the Σ(1385)± resonance production at midrapidity in Pb-Pb collisions at sNN−−−√=5.02 TeV with the ALICE detector is presented in this Letter. The resonances are reconstructed via their hadronic decay channel, Λπ, as a function of the transverse momentum (pT) and the collision centrality. The results are discussed in comparison with the measured yield of pions and with expectations from the statistical hadronization model as well as commonly employed event generators, including PYTHIA8/Angantyr and EPOS3 coupled to the UrQMD hadronic cascade afterburner. None of the models can describe the data. For Σ(1385)±, a similar behaviour as K∗(892)0 is observed in data unlike the predictions of EPOS3 with afterburner.
An invariant differential cross section measurement of inclusive π0 and η meson production at mid-rapidity in pp collisions at s√=8 TeV was carried out by the ALICE experiment at the LHC. The spectra of neutral mesons π0 and η were measured in transverse momentum ranges of 0.3<pT<35 GeV/c and 0.5<pT<35 GeV/c, respectively. Next-to-leading order perturbative QCD calculations using fragmentation functions DSS14 for π0 and AESSS for η overestimate the cross sections of both neutral mesons, but agree with the measured η/π0 ratio within uncertainties. The results are also compared with PYTHIA~8.2 predictions for which the Monash~2013 tune yields the best agreement with the measured neutral meson spectra. The measurements confirm a universal behavior of the η/π0 ratio seen for NA27, PHENIX and ALICE data for pp collisions from s√=27.5 GeV to s√=8 TeV within experimental uncertainties. A relation between the π0 and η production cross sections for pp collisions at s√=8 TeV is given by mT scaling for pT>3.5 GeV/c. However, a deviation from this empirical scaling law is observed for transverse momenta below pT<3.5 GeV/c in the η/π0 ratio with a significance of 6.2σ.
An invariant differential cross section measurement of inclusive π0 and η meson production at mid-rapidity in pp collisions at s√=8 TeV was carried out by the ALICE experiment at the LHC. The spectra of π0 and η mesons were measured in transverse momentum ranges of 0.3<pT<35 GeV/c and 0.5<pT<35 GeV/c, respectively. Next-to-leading order perturbative QCD calculations using fragmentation functions DSS14 for the π0 and AESSS for the η overestimate the cross sections of both neutral mesons, although such calculations agree with the measured η/π0 ratio within uncertainties. The results were also compared with PYTHIA~8.2 predictions for which the Monash~2013 tune yields the best agreement with the measured neutral meson spectra. The measurements confirm a universal behavior of the η/π0 ratio seen for NA27, PHENIX and ALICE data for pp collisions from s√=27.5 GeV to s√=8 TeV within experimental uncertainties. A relation between the π0 and η production cross sections for pp collisions at s√=8 TeV is given by mT scaling for pT>3.5 GeV/c. However, a deviation from this empirical scaling rule is observed for transverse momenta below pT<3.5 GeV/c in the η/π0 ratio with a significance of 6.2σ.
Using the NA49 main TPC, the central production of hyperons has been measured in CERN SPS Pb - Pb collisions at 158 GeV c-1. The preliminary ratio, studied at 2.0 < y < 2.6 and 1 < pT < 3 GeV c-1, equals ~ (13 ± 4)% (systematic error only). It is compatible, within errors, with the previously obtained ratios for central S + S [1], S + W [2], and S + Au [3] collisions. The fit to the transverse momentum distribution resulted in an inverse slope parameter T of 297 MeV. At this level of statistics we do not see any noticeable enhancement of hyperon production with the increased volume (and, possibly, degree of equilibration) of the system from S + S to Pb + Pb. This result is unexpected and counterintuitive, and should be further investigated. If confirmed, it will have a significant impact on our understanding of mechanisms leading to the enhanced strangeness production in heavy-ion collisions.
The first measurements of the scattering parameters of ΛK pairs in all three charge combinations (ΛK+, ΛK−, and ΛK0S) are presented. The results are achieved through a femtoscopic analysis of ΛK correlations in Pb-Pb collisions at sNN−−−√ = 2.76 TeV recorded by ALICE at the LHC. The femtoscopic correlations result from strong final-state interactions, and are fit with a parametrization allowing for both the characterization of the pair emission source and the measurement of the scattering parameters for the particle pairs. Extensive studies with the THERMINATOR 2 event generator provide a good description of the non-femtoscopic background, which results mainly from collective effects, with unprecedented precision. Furthermore, together with HIJING simulations, this model is used to account for contributions from residual correlations induced by feed-down from particle decays. The extracted scattering parameters indicate that the strong force is repulsive in the ΛK+ interaction and attractive in the ΛK− interaction. The data hint that the and ΛK0S interaction is attractive, however the uncertainty of the result does not permit such a decisive conclusion. The results suggest an effect arising either from different quark-antiquark interactions between the pairs (ss¯ in ΛK+ and uu¯¯¯ in ΛK−) or from different net strangeness for each system (S = 0 for ΛK+, and S = −2 for ΛK−). Finally, the ΛK systems exhibit source radii larger than expected from extrapolation from identical particle femtoscopic studies. This effect is interpreted as resulting from the separation in space-time of the single-particle Λ and K source distributions.
The first measurements of the scattering parameters of ΛK pairs in all three charge combinations (ΛK+, ΛK−, and ΛK0S) are presented. The results are achieved through a femtoscopic analysis of ΛK correlations in Pb-Pb collisions at sNN−−−√ = 2.76 TeV recorded by ALICE at the LHC. The femtoscopic correlations result from strong final-state interactions, and are fit with a parametrization allowing for both the characterization of the pair emission source and the measurement of the scattering parameters for the particle pairs. Extensive studies with the THERMINATOR 2 event generator provide a good description of the non-femtoscopic background, which results mainly from collective effects, with unprecedented precision. Furthermore, together with HIJING simulations, this model is used to account for contributions from residual correlations induced by feed-down from particle decays. The extracted scattering parameters indicate that the strong force is repulsive in the ΛK+ interaction and attractive in the ΛK− interaction. The data hint that the and ΛK0S interaction is attractive, however the uncertainty of the result does not permit such a decisive conclusion. The results suggest an effect arising either from different quark-antiquark interactions between the pairs (ss¯ in ΛK+ and uu¯¯¯ in ΛK−) or from different net strangeness for each system (S = 0 for ΛK+, and S = −2 for ΛK−). Finally, the ΛK systems exhibit source radii larger than expected from extrapolation from identical particle femtoscopic studies. This effect is interpreted as resulting from the separation in space-time of the single-particle Λ and K source distributions.
The first measurements of the scattering parameters of ΛK pairs in all three charge combinations (ΛK+, ΛK−, and ΛK0S) are presented. The results are achieved through a femtoscopic analysis of ΛK correlations in Pb-Pb collisions at sNN−−−√ = 2.76 TeV recorded by ALICE at the LHC. The femtoscopic correlations result from strong final-state interactions, and are fit with a parametrization allowing for both the characterization of the pair emission source and the measurement of the scattering parameters for the particle pairs. Extensive studies with the THERMINATOR 2 event generator provide a good description of the non-femtoscopic background, which results mainly from collective effects, with unprecedented precision. Furthermore, together with HIJING simulations, this model is used to account for contributions from residual correlations induced by feed-down from particle decays. The extracted scattering parameters indicate that the strong force is repulsive in the ΛK+ interaction and attractive in the ΛK− and ΛK0S interactions. The results suggest an effect arising either from different quark-antiquark interactions between the pairs (ss¯ in ΛK+ and uu¯¯¯ in ΛK−) or from different net strangeness for each system (S = 0 for ΛK+, and S = −2 for ΛK−). Finally, the ΛK systems exhibit source radii larger than expected from extrapolation from identical particle femtoscopic studies. This effect is interpreted as resulting from the separation in space-time of the single-particle Λ and K source distributions.
The pT-differential production cross section of prompt Λ+c charmed baryons was measured with the ALICE detector at the Large Hadron Collider (LHC) in pp collisions at s√=7 TeV and in p-Pb collisions at sNN−−−√=5.02 TeV at midrapidity. The Λ+c and Λ¯¯¯¯−c were reconstructed in the hadronic decay modes Λ+c→pK−π+, Λ+c→pK0S and in the semileptonic channel Λ+c→e+νeΛ (and charge conjugates). The measured values of the Λ+c/D0 ratio, which is sensitive to the c-quark hadronisation mechanism, and in particular to the production of baryons, are presented and are larger than those measured previously in different colliding systems, centre-of-mass energies, rapidity and pT intervals, where the Λ+c production process may differ. The results are compared with the expectations obtained from perturbative Quantum Chromodynamics calculations and Monte Carlo event generators. Neither perturbative QCD calculations nor Monte Carlo models reproduce the data, indicating that the fragmentation of heavy-flavour baryons is not well understood. The first measurement at the LHC of the Λ+c nuclear modification factor, RpPb, is also presented. The RpPb is found to be consistent with unity and with that of D mesons within the uncertainties, and consistent with a theoretical calculation that includes cold nuclear matter effects and a calculation that includes charm quark interactions with a deconfined medium.
The pT-differential production cross section of prompt Λ+c charmed baryons was measured with the ALICE detector at the Large Hadron Collider (LHC) in pp collisions at s√=7 TeV and in p-Pb collisions at sNN−−−√=5.02 TeV at midrapidity. The Λ+c and Λ¯¯¯¯−c were reconstructed in the hadronic decay modes Λ+c→pK−π+, Λ+c→pK0S and in the semileptonic channel Λ+c→e+νeΛ (and charge conjugates). The measured values of the Λ+c/D0 ratio, which is sensitive to the c-quark hadronisation mechanism, and in particular to the production of baryons, are presented and are larger than those measured previously in different colliding systems, centre-of-mass energies, rapidity and pT intervals, where the Λ+c production process may differ. The results are compared with the expectations obtained from perturbative Quantum Chromodynamics calculations and Monte Carlo event generators. Neither perturbative QCD calculations nor Monte Carlo models reproduce the data, indicating that the fragmentation of heavy-flavour baryons is not well understood. The first measurement at the LHC of the Λ+c nuclear modification factor, RpPb, is also presented. The RpPb is found to be consistent with unity and with that of D mesons within the uncertainties, and consistent with a theoretical calculation that includes cold nuclear matter effects and a calculation that includes charm quark interactions with a deconfined medium.
The pT-differential production cross section of prompt Λ +c charmed baryons was measured with the ALICE detector at the Large Hadron Collider (LHC) in pp collisions at s√=7 TeV and in p-Pb collisions at sNN−−−√=5.02 TeV at midrapidity. The Λ +c and Λ¯¯¯¯c¯¯¯ were reconstructed in the hadronic decay modes Λ +c → pK−π+, Λ +c → pK 0S and in the semileptonic channel Λ +c → e+νeΛ (and charge conjugates). The measured values of the Λ +c/D0 ratio, which is sensitive to the c-quark hadronisation mechanism, and in particular to the production of baryons, are presented and are larger than those measured previously in different colliding systems, centre-of-mass energies, rapidity and pT intervals, where the Λ +c production process may differ. The results are compared with the expectations obtained from perturbative Quantum Chromodynamics calculations and Monte Carlo event generators. Neither perturbative QCD calculations nor Monte Carlo models reproduce the data, indicating that the fragmentation of heavy-flavour baryons is not well understood. The first measurement at the LHC of the Λ +c nuclear modification factor, RpPb, is also presented. The RpPb is found to be consistent with unity and with that of D mesons within the uncertainties, and consistent with a theoretical calculation that includes cold nuclear matter effects and a calculation that includes charm quark interactions with a deconfined medium.
The production cross section of prompt Λ+c charmed baryons was measured with the ALICE detector at the LHC at midrapidity in proton-proton (pp) and proton-lead (p-Pb) collisions at a centre-of-mass energy per nucleon pair of sNN−−−√=5.02 TeV. The Λ+c and Λ¯¯¯¯−c baryons were reconstructed in the hadronic decay channels Λ+c→pK−π+ and Λ+c→pK0S and respective charge conjugates. The measured differential cross sections as a function of transverse momentum (pT) and the pT-integrated Λ+c production cross section in pp and in p-Pb collisions are presented. The Λ+c nuclear modification factor (RpPb), calculated from the cross sections in pp and in p-Pb collisions, is presented and compared with the RpPb of D mesons. The Λ+c/D0 ratio is also presented and compared with the light-flavour baryon-to-meson ratios p/π and Λ/K0S, and measurements from other LHC experiments. The results are compared to predictions from model calculations and Monte Carlo event generators.
The production cross section of prompt Λ+c charm baryons was measured with the ALICE detector at the LHC at midrapidity in proton-proton (pp) and proton-lead (p-Pb) collisions at a centre-of-mass energy per nucleon pair of sNN−−−√=5.02 TeV. The Λ+c and Λ¯¯¯¯−c baryons were reconstructed in the hadronic decay channels Λ+c→pK−π+ and Λ+c→pK0S and respective charge conjugates. The measured differential cross sections as a function of transverse momentum (pT) and the pT-integrated Λ+c production cross section in pp and in p-Pb collisions are presented. The Λ+c nuclear modification factor (RpPb), calculated from the cross sections in pp and in p-Pb collisions, is presented and compared with the RpPb of D mesons. The Λ+c/D0 ratio is also presented and compared with the light-flavour baryon-to-meson ratios p/π and Λ/K0S, and measurements from other LHC experiments. The results are compared to predictions from model calculations and Monte Carlo event generators.
The production cross section of prompt Λ+c charm baryons was measured with the ALICE detector at the LHC at midrapidity in proton-proton (pp) and proton-lead (p-Pb) collisions at a centre-of-mass energy per nucleon pair of sNN−−−√=5.02 TeV. The Λ+c and Λ¯¯¯¯−c baryons were reconstructed in the hadronic decay channels Λ+c→pK−π+ and Λ+c→pK0S and respective charge conjugates. The measured differential cross sections as a function of transverse momentum (pT) and the pT-integrated Λ+c production cross section in pp and in p-Pb collisions are presented. The Λ+c nuclear modification factor (RpPb), calculated from the cross sections in pp and in p-Pb collisions, is presented and compared with the RpPb of D mesons. The Λ+c/D0 ratio is also presented and compared with the light-flavour baryon-to-meson ratios p/π and Λ/K0S, and measurements from other LHC experiments. The results are compared to predictions from model calculations and Monte Carlo event generators.
The production cross section of prompt Λ+c charmed baryons was measured with the ALICE detector at the LHC at midrapidity in proton-proton (pp) and proton-lead (p-Pb) collisions at a centre-of-mass energy per nucleon pair of sNN−−−√=5.02 TeV. The Λ+c and Λ¯¯¯¯−c baryons were reconstructed in the hadronic decay channels Λ+c→pK−π+ and Λ+c→pK0S and respective charge conjugates. The measured differential cross sections as a function of transverse momentum (pT) and the pT-integrated Λ+c production cross section in pp and in p-Pb collisions are presented. The Λ+c nuclear modification factor (RpPb), calculated from the cross sections in pp and in p-Pb collisions, is presented and compared with the RpPb of D mesons. The Λ+c/D0 ratio is also presented and compared with the light-flavour baryon-to-meson ratios p/π and Λ/K0S, and measurements from other LHC experiments. The results are compared to predictions from model calculations and Monte Carlo event generators.
A measurement of the production of prompt +c baryons in Pb–Pb collisions at √sNN = 5.02 TeV with the ALICE detector at the LHC is reported. The +c and − c were reconstructed at midrapidity (|y| < 0.5) via the hadronic decay channel +c → pK0 S (and charge conjugate) in the transverse momentum and centrality intervals 6 < pT < 12 GeV/c and 0–80%. The +c /D0 ratio, which is sensitive to the charm quark hadronisation mechanisms in the medium, is measured and found to be larger than the ratio measured in minimum-bias pp collisions at √s = 7 TeV and in p–Pb collisions at √sNN = 5.02 TeV. In particular, the values in p–Pb and Pb–Pb collisions differ by about two standard deviations of the combined statistical and systematic uncertainties in the common pT interval covered by the measurements in the two collision systems. The + c /D0 ratio is also compared with model calculations including different implementations of charm quark hadronisation. The measured ratio is reproduced by models implementing a pure coalescence scenario, while adding a fragmentation contribution leads to an underestimation. The + c nuclear modification factor, RAA, is also presented. The measured values of the RAA of + c , D+ s and non-strange D mesons are compatible within the combined statistical and systematic uncertainties. They show, however, a hint of a hierarchy (RD0 AA < RD+ s AA < R+ c AA ), conceivable with a contribution from coalescence mechanisms to charm hadron formation in the medium.
A measurement of the production of prompt Λ+c baryons in Pb-Pb collisions at sNN−−−√=5.02 TeV with the ALICE detector at the LHC is reported. The Λ+c and Λ¯¯¯¯−c were reconstructed at midrapidity (|y|<0.5) via the hadronic decay channel Λ+c→pK0S (and charge conjugate) in the transverse momentum and centrality intervals 6<pT<12 GeV/c and 0-80%. The Λ+c/D0 ratio, which is sensitive to the charm quark hadronisation mechanisms in the medium, is measured and found to be larger than the ratio measured in minimum-bias pp collisions at s√=7 TeV and in p-Pb collisions at sNN−−−√=5.02 TeV. In particular, the values in p-Pb and Pb-Pb collisions differ by about two standard deviations of the combined statistical and systematic uncertainties in the common pT interval covered by the measurements in the two collision system. The Λ+c/D0 ratio is also compared with model calculations including different implementations of charm quark hadronisation. The measured ratio is reproduced by models implementing a pure coalescence scenario, while adding a fragmentation contribution leads to an underestimation. The Λ+c nuclear modification factor, RAA, is also presented. The measured values of the RAA of Λ+c, Ds and non-strange D mesons are compatible within the combined statistical and systematic uncertainties. They show, however, a hint of a hierarchy (RD0AA<RDsAA<RΛ+cAA), conceivable with a contribution of recombination mechanisms to charm hadron formation in the medium.
A measurement of the production of prompt Λ+c baryons in Pb-Pb collisions at sNN−−−√=5.02 TeV with the ALICE detector at the LHC is reported. The Λ+c and Λ¯¯¯¯−c were reconstructed at midrapidity (|y|<0.5) via the hadronic decay channel Λ+c→pK0S (and charge conjugate) in the transverse momentum and centrality intervals 6<pT<12 GeV/c and 0-80%. The Λ+c/D0 ratio, which is sensitive to the charm quark hadronisation mechanisms in the medium, is measured and found to be larger than the ratio measured in minimum-bias pp collisions at s√=7 TeV and in p-Pb collisions at sNN−−−√=5.02 TeV. In particular, the values in p-Pb and Pb-Pb collisions differ by about two standard deviations of the combined statistical and systematic uncertainties. The Λ+c/D0 ratio is also compared with model calculations including different implementations of charm quark hadronisation. The measured ratio is reproduced by models implementing a pure coalescence scenario, while adding a fragmentation contribution leads to an underestimation. The Λ+c nuclear modification factor, RAA, is also presented. The measured values of the RAA of Λ+c, Ds and non-strange D mesons are compatible within the combined statistical and systematic uncertainties. They show, however, a hint of a hierarchy (RD0AA<RDsAA<RΛ+cAA), conceivable with a contribution of recombination mechanisms to charm hadron formation in the medium.
Λ+c production and baryon-to-meson ratios in pp and p–Pb collisions at √sNN = 5.02 TeV at the LHC
(2021)
The prompt production of the charm baryon Λ+c and the Λ+c/D0 production ratios were measured at midrapidity with the ALICE detector in pp and p-Pb collisions at sNN−−−√=5.02TeV. These new measurements show a clear decrease of the Λ+c/D0 ratio with increasing transverse momentum (pT) in both collision systems in the range 2<pT<12 GeV/c, exhibiting similarities with the light-flavour baryon-to-meson ratios p/π and Λ/K0S. At low pT, predictions that include additional colour-reconnection mechanisms beyond the leading-colour approximation; assume the existence of additional higher-mass charm-baryon states; or include hadronisation via coalescence can describe the data, while predictions driven by charm-quark fragmentation processes measured in e+e− and e−p collisions significantly underestimate the data. The results presented in this letter provide significant evidence that the established assumption of universality (colliding-system independence) of parton-to-hadron fragmentation is not sufficient to describe charm-baryon production in hadronic collisions at LHC energies.
Λ+c production and baryon-to-meson ratios in pp and p–Pb collisions at √sNN = 5.02 TeV at the LHC
(2021)
The prompt production of the charm baryon Λ+c and the Λ+c/D0 production ratios were measured at midrapidity with the ALICE detector in pp and p-Pb collisions at sNN−−−√=5.02TeV. These new measurements show a clear decrease of the Λ+c/D0 ratio with increasing transverse momentum (pT) in both collision systems in the range 2<pT<12 GeV/c, exhibiting similarities with the light-flavour baryon-to-meson ratios p/π and Λ/K0S. At low pT, predictions that include additional colour-reconnection mechanisms beyond the leading-colour approximation; assume the existence of additional higher-mass charm-baryon states; or include hadronisation via coalescence can describe the data, while predictions driven by charm-quark fragmentation processes measured in e+e− and e−p collisions significantly underestimate the data. The results presented in this letter provide significant evidence that the established assumption of universality (colliding-system independence) of parton-to-hadron fragmentation is not sufficient to describe charm-baryon production in hadronic collisions at LHC energies.
Λ+c production and baryon-to-meson ratios in pp and p–Pb collisions at √sNN = 5.02 TeV at the LHC
(2021)
The prompt production of the charm baryon Λ+c and the Λ+c/D0 production ratios were measured at midrapidity with the ALICE detector in pp and p-Pb collisions at sNN−−−√=5.02TeV. These new measurements show a clear decrease of the Λ+c/D0 ratio with increasing transverse momentum (pT) in both collision systems in the range 2<pT<12 GeV/c, exhibiting similarities with the light-flavour baryon-to-meson ratios p/π and Λ/K0S. At low pT, predictions that include additional colour-reconnection mechanisms beyond the leading-colour approximation; assume the existence of additional higher-mass charm-baryon states; or include hadronisation via coalescence can describe the data, while predictions driven by charm-quark fragmentation processes measured in e+e− and e−p collisions significantly underestimate the data. The results presented in this letter provide significant evidence that the established assumption of universality (colliding-system independence) of parton-to-hadron fragmentation is not sufficient to describe charm-baryon production in hadronic collisions at LHC energies.
Λ+c production and baryon-to-meson ratios in pp and p–Pb collisions at √sNN = 5.02 TeV at the LHC
(2020)
The prompt production of the charmed baryon Λ+c and the Λ+c/D0 production ratios were measured at midrapidity with the ALICE detector in pp and p-Pb collisions at sNN−−−√=5.02TeV. These new measurements show a clear decrease of the Λ+c/D0 ratio with increasing transverse momentum (pT) in both collision systems in the range 2<pT<12 GeV/c, exhibiting similarities with the light-flavour baryon-to-meson ratios p/π and Λ/K0S. At low pT, predictions that include additional colour-reconnection mechanisms beyond the leading-colour approximation; assume the existence of additional higher-mass charmed-baryon states; or include hadronisation via coalescence can describe the data, while predictions driven by charm-quark fragmentation processes measured in e+e− and e−p collisions significantly underestimate the data. The results presented in this letter provide significant evidence that the established assumption of universality (colliding-system independence) of parton-to-hadron fragmentation is not sufficient to describe charmed-baryon production in hadronic collisions at LHC energies.
Z-boson production in p–Pb collisions at √sNN = 8.16 TeV and Pb–Pb collisions at √sNN = 5.02 TeV
(2021)
Measurement of Z-boson production in p-Pb collisions at sNN−−−√=8.16 TeV and Pb-Pb collisions at sNN−−−√=5.02 TeV is reported. It is performed in the dimuon decay channel, through the detection of muons with pseudorapidity −4<ημ<−2.5 and transverse momentum pμT>20 GeV/c in the laboratory frame. The invariant yield and nuclear modification factor are measured for opposite-sign dimuons with invariant mass 60<mμμ<120 GeVc2 and rapidity 2.5<yμμcms<4. They are presented as a function of rapidity and, for the Pb-Pb collisions, of centrality as well. The results are compared with theoretical calculations, both with and without nuclear modifications to the Parton Distribution Functions (PDFs). In p-Pb collisions the center-of-mass frame is boosted with respect to the laboratory frame, and the measurements cover the backward (−4.46<yμμcms<−2.96) and forward (2.03<yμμcms<3.53) rapidity regions. For the p-Pb collisions, the results are consistent within experimental and theoretical uncertainties with calculations that include both free-nucleon and nuclear-modified PDFs. For the Pb-Pb collisions, a 3.4σ deviation is seen in the integrated yield between the data and calculations based on the free-nucleon PDFs, while good agreement is found once nuclear modifications are considered.
Z-boson production in p–Pb collisions at √sNN = 8.16 TeV and Pb–Pb collisions at √sNN = 5.02 TeV
(2020)
Measurement of Z-boson production in p-Pb collisions at sNN−−−√=8.16 TeV and Pb-Pb collisions at sNN−−−√=5.02 TeV is reported. It is performed in the dimuon decay channel, through the detection of muons with pseudorapidity −4<ημ<−2.5 and transverse momentum pμT>20 GeV/c in the laboratory frame. The invariant yield and nuclear modification factor are measured for opposite-sign dimuons with invariant mass 60<mμμ<120 GeVc2 and rapidity 2.5<yμμcms<4. They are presented as a function of rapidity and, for the Pb-Pb collisions, of centrality as well. The results are compared with theoretical calculations, both with and without nuclear modifications to the Parton Distribution Functions (PDFs). In p-Pb collisions the center-of-mass frame is boosted with respect to the laboratory frame, and the measurements cover the backward (−4.46<yμμcms<−2.96) and forward (2.03<yμμcms<3.53) rapidity regions. For the p-Pb collisions, the results are consistent within experimental and theoretical uncertainties with calculations that include both free-nucleon and nuclear-modified PDFs. For the Pb-Pb collisions, a 3.4σ deviation is seen in the integrated yield between the data and calculations based on the free-nucleon PDFs, while good agreement is found once nuclear modifications are considered.
Z-boson production in p-Pb collisions at √sNN = 8.16 TeV and Pb-Pb collisions at √sNN = 5.02 TeV
(2020)
Measurement of Z-boson production in p-Pb collisions at sNN−−−√ = 8.16 TeV and Pb-Pb collisions at sNN−−−√ = 5.02 TeV is reported. It is performed in the dimuon decay channel, through the detection of muons with pseudorapidity −4 < ημ < −2.5 and transverse momentum pμT > 20 GeV/c in the laboratory frame. The invariant yield and nuclear modification factor are measured for opposite-sign dimuons with invariant mass 60 < mμμ < 120 GeV/c2 and rapidity 2.5 < yμμcms < 4. They are presented as a function of rapidity and, for the Pb-Pb collisions, of centrality as well. The results are compared with theoretical calculations, both with and without nuclear modifications to the Parton Distribution Functions (PDFs). In p-Pb collisions the center-of-mass frame is boosted with respect to the laboratory frame, and the measurements cover the backward (−4.46 < yμμcms < −2.96) and forward (2.03 < yμμcms < 3.53) rapidity regions. For the p-Pb collisions, the results are consistent within experimental and theoretical uncertainties with calculations that include both free-nucleon and nuclear-modified PDFs. For the Pb-Pb collisions, a 3.4σ deviation is seen in the integrated yield between the data and calculations based on the free-nucleon PDFs, while good agreement is found once nuclear modifications are considered.
We report measurements of Xi and Xi-bar hyperon absolute yields as a function of rapidity in 158 GeV/c Pb+Pb collisions. At midrapidity, dN/dy = 2.29 +/- 0.12 for Xi, and 0.52 +/- 0.05 for Xi-bar, leading to the ratio of Xi-bar/Xi = 0.23 +/- 0.03. Inverse slope parameters fitted to the measured transverse mass spectra are of the order of 300 MeV near mid-rapidity. The estimated total yield of Xi particles in Pb+Pb central interactions amounts to 7.4 +/- 1.0 per collision. Comparison to Xi production in properly scaled p+p reactions at the same energy reveals a dramatic enhancement (about one order of magnitude) of Xi production in Pb+Pb central collisions over elementary hadron interactions.
W±-boson production in p–Pb collisions at √sNN = 8.16 TeV and Pb–Pb collisions at √sNN = 5.02 TeV
(2023)
The production of the W± bosons measured in p−Pb collisions at a centre-of-mass energy per nucleon−nucleon collision sNN−−−−√=8.16 TeV and Pb−Pb collisions at √sNN=5.02 TeV with ALICE at the LHC is presented. The W± bosons are measured via their muonic decay channel, with the muon reconstructed in the pseudorapidity region −4<ημlab<−2.5 with transverse momentum pμT>10 GeV/c. While in Pb−Pb collisions the measurements are performed in the forward (2.5<yμcms<4) rapidity region, in p−Pb collisions, where the centre-of-mass frame is boosted with respect to the laboratory frame, the measurements are performed in the backward (−4.46<yμcms<−2.96) and forward (2.03<yμcms<3.53) rapidity regions. The W− and W+ production cross sections, lepton-charge asymmetry, and nuclear modification factors are evaluated as a function of the muon rapidity. In order to study the production as a function of the p−Pb collision centrality, the production cross sections of the W− and W+ bosons are combined and normalised to the average number of binary nucleon−nucleon collision ⟨Ncoll⟩. In Pb−Pb collisions, the same measurements are presented as a function of the collision centrality. Study of the binary scaling of the W±-boson cross sections in p−Pb and Pb−Pb collisions is also reported. The results are compared with perturbative QCD (pQCD) calculations, with and without nuclear modifications of the Parton Distribution Functions (PDFs), as well as with available data at the LHC. Significant deviations from the theory expectations are found in the two collision systems, indicating that the measurements can provide additional constraints for the determination of nuclear PDF (nPDFs) and in particular of the light-quark distributions.
W±-boson production in p–Pb collisions at √sNN = 8.16 TeV and Pb–Pb collisions at √sNN = 5.02 TeV
(2023)
The production of the W± bosons measured in p–Pb collisions at a centreof-mass energy per nucleon–nucleon collision √sNN = 8.16 TeV and Pb–Pb collisions at √sNN = 5.02 TeV with ALICE at the LHC is presented. The W± bosons are measured via their muonic decay channel, with the muon reconstructed in the pseudorapidity region −4 < ηµ lab < −2.5 with transverse momentum p µ T > 10 GeV/c. While in Pb–Pb collisions the measurements are performed in the forward (2.5 < yµ cms < 4) rapidity region, in p–Pb collisions, where the centre-of-mass frame is boosted with respect to the laboratory frame, the measurements are performed in the backward (−4.46 < yµ cms < −2.96) and forward (2.03 < yµ cms < 3.53) rapidity regions. The W− and W+ production cross sections, leptoncharge asymmetry, and nuclear modification factors are evaluated as a function of the muon rapidity. In order to study the production as a function of the p–Pb collision centrality, the production cross sections of the W− and W+ bosons are combined and normalised to the average number of binary nucleon–nucleon collision hNcolli. In Pb–Pb collisions, the same measurements are presented as a function of the collision centrality. Study of the binary scaling of the W±-boson cross sections in p–Pb and Pb–Pb collisions is also reported. The results are compared with perturbative QCD calculations, with and without nuclear modifications of the Parton Distribution Functions (PDFs), as well as with available data at the LHC. Significant deviations from the theory expectations are found in the two collision systems, indicating that the measurements can provide additional constraints for the determination of nuclear PDFs and in particular of the light-quark distributions.
White matter abnormalities across different epilepsy syndromes in adults: an ENIGMA Epilepsy study
(2019)
The epilepsies are commonly accompanied by widespread abnormalities in cerebral white matter. ENIGMA-Epilepsy is a large quantitative brain imaging consortium, aggregating data to investigate patterns of neuroimaging abnormalities in common epilepsy syndromes, including temporal lobe epilepsy, extratemporal epilepsy, and genetic generalized epilepsy. Our goal was to rank the most robust white matter microstructural differences across and within syndromes in a multicentre sample of adult epilepsy patients. Diffusion-weighted MRI data were analyzed from 1,069 non-epileptic controls and 1,249 patients: temporal lobe epilepsy with hippocampal sclerosis (N=599), temporal lobe epilepsy with normal MRI (N=275), genetic generalized epilepsy (N=182) and nonlesional extratemporal epilepsy (N=193). A harmonized protocol using tract-based spatial statistics was used to derive skeletonized maps of fractional anisotropy and mean diffusivity for each participant, and fiber tracts were segmented using a diffusion MRI atlas. Data were harmonized to correct for scanner-specific variations in diffusion measures using a batch-effect correction tool (ComBat). Analyses of covariance, adjusting for age and sex, examined differences between each epilepsy syndrome and controls for each white matter tract (Bonferroni corrected at p<0.001). Across “all epilepsies” lower fractional anisotropy was observed in most fiber tracts with small to medium effect sizes, especially in the corpus callosum, cingulum and external capsule. Less robust effects were seen with mean diffusivity. Syndrome-specific fractional anisotropy and mean diffusivity differences were most pronounced in patients with hippocampal sclerosis in the ipsilateral parahippocampal cingulum and external capsule, with smaller effects across most other tracts. Those with temporal lobe epilepsy and normal MRI showed a similar pattern of greater ipsilateral than contralateral abnormalities, but less marked than those in patients with hippocampal sclerosis. Patients with generalized and extratemporal epilepsies had pronounced differences in fractional anisotropy in the corpus callosum, corona radiata and external capsule, and in mean diffusivity of the anterior corona radiata. Earlier age of seizure onset and longer disease duration were associated with a greater extent of microstructural abnormalities in patients with hippocampal sclerosis. We demonstrate microstructural abnormalities across major association, commissural, and projection fibers in a large multicentre study of epilepsy. Overall, epilepsy patients showed white matter abnormalities in the corpus callosum, cingulum and external capsule, with differing severity across epilepsy syndromes. These data further define the spectrum of white matter abnormalities in common epilepsy syndromes, yielding new insights into pathological substrates that may be used to guide future therapeutic and genetic studies.
Accurate spectroscopy of highly-charged high-Z ions in a storage ring is demonstrated to be feasible by the use of specially adapted crystal optics. The method has been applied for the measurement of the 1s Lamb shift in hydrogen-like gold (Au+78) in a storage ring through spectroscopy of the Lyman x-rays. This measurement represents the first result obtained for a high-Z element using high-resolution wavelength-dispersive spectroscopy in the hard x-ray regime, paving the way for sensitivity to higher- order QED effects.
The W and Z boson production was measured via the muonic decay channel in proton-lead collisions at sNN−−−√=5.02 TeV at the Large Hadron Collider with the ALICE detector. The measurement covers backward (−4.46<ycms<−2.96) and forward (2.03<ycms<3.53) rapidity regions, corresponding to Pb-going and p-going directions, respectively. The Z-boson production cross section, with dimuon invariant mass of 60<mμμ<120 GeV/c2 and muon transverse momentum (pμT) larger than 20 GeV/c, is measured. The production cross section and charge asymmetry of muons from W-boson decays with pμT>10 GeV/c are determined. The results are compared to theoretical calculations both with and without including the nuclear modification of the parton distribution functions. The W-boson production is also studied as a function of the collision centrality: the cross section of muons from W-boson decays is found to scale with the average number of binary nucleon-nucleon collisions within uncertainties.
The W and Z boson production was measured via the muonic decay channel in proton-lead collisions at sNN−−−√=5.02 TeV at the Large Hadron Collider with the ALICE detector. The measurement covers backward (−4.46<ycms<−2.96) and forward (2.03<ycms<3.53) rapidity regions, corresponding to Pb-going and p-going directions, respectively. The Z-boson production cross section, with dimuon invariant mass of 60<mμμ<120 GeV/c2 and muon transverse momentum (pμT) larger than 20 GeV/c, is measured. The production cross section and charge asymmetry of muons from W-boson decays with pμT>10 GeV/c are determined. The results are compared to theoretical calculations both with and without including the nuclear modification of the parton distribution functions. The W-boson production is also studied as a function of the collision centrality: the cross section of muons from W-boson decays is found to scale with the average number of binary nucleon-nucleon collisions within uncertainties.
The W and Z boson production was measured via the muonic decay channel in proton-lead collisions at sNN−−−√=5.02 TeV at the Large Hadron Collider with the ALICE detector. The measurement covers backward (−4.46<ycms<−2.96) and forward (2.03<ycms<3.53) rapidity regions, corresponding to Pb-going and p-going directions, respectively. The Z-boson production cross section, with dimuon invariant mass of 60<mμμ<120 GeV/c2 and muon transverse momentum (pμT) larger than 20 GeV/c, is measured. The production cross section and charge asymmetry of muons from W-boson decays with pμT>10 GeV/c are determined. The results are compared to theoretical calculations both with and without including the nuclear modification of the parton distribution functions. The W-boson production is also studied as a function of the collision centrality: the cross section of muons from W-boson decays is found to scale with the average number of binary nucleon-nucleon collisions within uncertainties.