Refine
Year of publication
Document Type
- Preprint (579)
- Article (370)
- Working Paper (3)
- Conference Proceeding (2)
- Part of a Book (1)
Language
- English (955) (remove)
Has Fulltext
- yes (955) (remove)
Is part of the Bibliography
- no (955)
Keywords
- Heavy Ion Experiments (18)
- Hadron-Hadron scattering (experiments) (11)
- Heavy-ion collision (6)
- LHC (6)
- Kollisionen schwerer Ionen (5)
- Hadron-Hadron Scattering (4)
- Quark-Gluon Plasma (4)
- heavy ion collisions (4)
- ALICE experiment (3)
- Heavy Ions (3)
- Jets and Jet Substructure (3)
- Quark Gluon Plasma (3)
- Accelerators & Beams (2)
- Atomic, Molecular & Optical (2)
- Beauty production (2)
- Charm physics (2)
- Experimental nuclear physics (2)
- Experimental particle physics (2)
- Fragmentation (2)
- Jets (2)
- Lepton-Nucleon Scattering (experiments) (2)
- Particle and resonance production (2)
- Particle correlations and fluctuations (2)
- Pb–Pb collisions (2)
- Psychiatric disorders (2)
- QGP (2)
- Quark-Gluon-Plasma (2)
- RNA interference (RNAi) (2)
- Single electrons (2)
- UrQMD Modell (2)
- peptide aptamer (PA) (2)
- pp collisions (2)
- quark-gluon-plasma (2)
- signal transducer and activator of transcription 5 (Stat5) (2)
- 16S rRNA sequencing (1)
- ADAMTS-13 (1)
- ADHD (1)
- ALICE (1)
- ALICE detector (1)
- AO-PCCF (1)
- ATR-FTIR (1)
- Abundance (1)
- Accelerators & storage rings (1)
- Acute coronary syndrome (1)
- Anemia (1)
- Anonymity (1)
- Anti-kaon–nucleon physics (1)
- Anti-nuclei (1)
- Anticoagulation (1)
- Aortic valve (1)
- Aortic valve replacement (1)
- Atomic & molecular beams (1)
- Atomic and Molecular Physics (1)
- Atrial fibrillation (1)
- Autecology (1)
- Bcr-Abl (1)
- Beam loss (1)
- Biofuel (1)
- Bleeding (1)
- Blood loss (1)
- Blood transfusion (1)
- Breast cancer (1)
- Butanol (1)
- COVID-19 (1)
- Cardiac troponin (1)
- Centrality Class (1)
- Centrality Selection (1)
- Charge-transfer collisions (1)
- Circular accelerators (1)
- Clinical Trials and Observations (1)
- Clinical genetics (1)
- Collective Flow (1)
- Competition (1)
- DTI (1)
- Dark Trading (1)
- Difficult Airway Management (1)
- Ehrlich pathway (1)
- Electron-pion identification (1)
- Electronic transitions (1)
- Electroweak interaction (1)
- Elliptic flow (1)
- Energie (1)
- Epilepsy (1)
- Equation of state (1)
- Exosomes (1)
- Experimental autoimmune encephalomyelitis (1)
- Feeding types (1)
- Fermentation (1)
- Fibre/foam sandwich radiator (1)
- Freshwater (1)
- Genetic engineering (1)
- HER2-positive (1)
- Hadron-Hadron Scattering Heavy (1)
- Hadron-hadron interactions (1)
- Heavy Ion Experiment (1)
- Heavy Quark Production (1)
- Heavy flavor production (1)
- Heavy ion collisions (1)
- Heavy ion storage ring (1)
- Heavy ions (1)
- Heavy-flavour decay muons (1)
- Heavy-flavour production (1)
- Hemostasis (1)
- Human behaviour (1)
- INR (1)
- Immediacy (1)
- In-Hospital Emergencies (1)
- Inflammation (1)
- International normalized ratio (1)
- Invariant Mass Distribution (1)
- Ionisation energy loss (1)
- Isobutanol (1)
- J/ϕ (1)
- Jak2(V617F) (1)
- Kaonic nuclei (1)
- Laryngeal Tube (1)
- Liquidity (1)
- Local thermodynamical equilibrium (1)
- Low & intermediate-energy accelerators (1)
- Low energy QCD (1)
- Lymphoid Neoplasia (1)
- Market Quality (1)
- Market Structure (1)
- Mice (1)
- MicroRNAs (1)
- Microplastic-biota interaction (1)
- Mid-rapidity (1)
- Minimum Bias (1)
- Molecular neuroscience (1)
- Monte Carlo (1)
- Monte-Carlo model for relativistic heavy ion collisions (1)
- Multi-strange baryons (1)
- Multi-wire proportional drift chamber (1)
- Myocardial infarction (1)
- NMR spectroscopy (1)
- Neoadjuvant therapy (1)
- Neonatal brain damage (1)
- Neural circuits (1)
- Neural network (1)
- Nichtgleichgewicht (1)
- Non-equilibrium effects (1)
- Orbital electron capture (1)
- Partial wave analysis (1)
- Particle Correlations and Fluctuations (1)
- Pathological complete response (1)
- Patient blood management (1)
- Personalized medicine (1)
- Photon counting (1)
- Plastic polymers (1)
- Point-of-care testing (1)
- Polarization (1)
- Polymers (1)
- Predictive markers (1)
- Preference for early resolution of uncertainty (1)
- Production Cross Section (1)
- Properties of Hadrons (1)
- Proton–proton (1)
- Pyrolysis GC–MS (1)
- QCD (1)
- QGP signals (1)
- QMD Modell (1)
- QMD model (1)
- Quark Production (1)
- Quark gluon plasma (1)
- Radiation detectors (1)
- Rapidity Range (1)
- Relativistic heavy ion physics (1)
- Relativistic heavy-ion collisions (1)
- Resolution Parameter (1)
- SARS-CoV-2 (1)
- SPS (1)
- Saccharomyces (1)
- Single particle decay spectroscopy (1)
- Statistical model (1)
- Supraglottic Airway Devices (1)
- Suspended solids (1)
- Systematic Uncertainty (1)
- TBSS (1)
- TR (1)
- Time Projection Chamber (1)
- Tracking (1)
- Transcatheter based aortic valve implantation (1)
- Transition radiation detector (1)
- Trigger (1)
- Triple negative (1)
- Two body weak decay (1)
- URQMD (1)
- Ultra-relativistic Quantum Molecular Dynamics model (1)
- Ultrarelativistic Quantum Molecular Dynamics (1)
- Ultrarelativistic Quantum Molecular Model (1)
- Ultrarelativistisches Quant Molekulares Modell (1)
- UrQMD model (1)
- Valine biosynthesis (1)
- Vector (1)
- Vector Boson Production (1)
- Visual analysis (1)
- Xenon-based gas mixture (1)
- Yeast (1)
- Zustandsgleichung (1)
- accessory proteins (1)
- antibodies (1)
- asparaginyl endopepdidase (AEP) (1)
- asset pricing (1)
- attention (1)
- b-cell lymphomas (1)
- bendamustine (1)
- canonical/non-canonical (1)
- cardiac surgery (1)
- cardiovascular pharmacology (1)
- cell-free protein synthesis (1)
- chemokines (1)
- chemotherapy regimen (1)
- chimeric antigen receptor t-cell therapy (1)
- chimeric antigen receptors (1)
- chronic hypoxia (1)
- chronic myeloid leukemia (CML) (1)
- cross-section of expected stock returns (1)
- dE/dx (1)
- development (1)
- dileptons (1)
- ectosomes (1)
- energy (1)
- equation of state (1)
- exosomes (1)
- extracellular vesicles (1)
- flow (1)
- functional magnetic resonance imaging (fMRI) (1)
- glycolysis (1)
- guidelines (1)
- hadron hadron Kollision (1)
- hadron hadron collision (1)
- heart failure (1)
- heavy ion experiments (1)
- heavy ions (1)
- hematopoietic stem cell transplantation (1)
- hemispherotomy (1)
- human erythroid leukemia (HEL) (1)
- humoral factors (1)
- hyperactivity (1)
- hypoparathyroidism (1)
- implied volatility (1)
- impulsivity (1)
- indication (1)
- inhibition of DNA-binding (1)
- interleukin-6 (1)
- intrinsically disordered region (1)
- juvenile brain lesion (1)
- legumain (1)
- leukapheresis (1)
- lokales thermodynamisches Gleichgewicht (1)
- lower leg fracture (1)
- lymphoma (1)
- microbiome (1)
- microparticles (1)
- microvesicles (1)
- minimal information requirements (1)
- molecular mechanisms (1)
- multiple myeloma (1)
- multiple sclerosis (1)
- nonstructural proteins (1)
- object tracking (1)
- pancreatic cancer (1)
- pancreatic surgery (1)
- particle ratios (1)
- plasticity (1)
- polygenic risk score (1)
- postoperative complications (1)
- ppK − (1)
- propofol anesthesia (1)
- prostate and breast cancer cell lines (1)
- protein transduction (1)
- protein/lentiviral transduction (1)
- quark gluon plasma (1)
- recurrent laryngeal nerve palsy (1)
- registry (1)
- relativistic (1)
- relativistische (1)
- remodelling (1)
- remote ischemic preconditioning (1)
- reproducibility (1)
- rigor (1)
- rituximab (1)
- schwere Ione (1)
- selective attention (1)
- spectra (1)
- standardization (1)
- strangeness (1)
- structural proteins (1)
- substance abuse disorder (1)
- therapy (1)
- thermalization (1)
- thrombotic microangiopathy (1)
- thrombotic thrombocytopenic purpura (1)
- thyroid resection (1)
- tibial fracture (1)
- toddler’s fracture (1)
- vascular surgery (1)
- venturesomeness (1)
- visuo-spatial attention (1)
- von Willebrand factor (1)
- x-ray techniques (1)
- yeast-two-hybrid (Y2H) (1)
Institute
- Physik (909)
- Frankfurt Institute for Advanced Studies (FIAS) (811)
- Informatik (775)
- Medizin (33)
- Center for Financial Studies (CFS) (3)
- ELEMENTS (3)
- Hochschulrechenzentrum (3)
- Informatik und Mathematik (3)
- Wirtschaftswissenschaften (3)
- Biowissenschaften (2)
The inclusive J/ψ meson production in Pb–Pb collisions at a center-of-mass energy per nucleon–nucleon collision of sNN=5.02 TeV at midrapidity (|y|<0.9) is reported by the ALICE Collaboration. The measurements are performed in the dielectron decay channel, as a function of event centrality and J/ψ transverse momentum pT, down to pT=0. The J/ψ mean transverse momentum 〈pT〉 and rAA ratio, defined as 〈pT2〉PbPb/〈pT2〉pp, are evaluated. Both observables show a centrality dependence decreasing towards central (head-on) collisions. The J/ψ nuclear modification factor RAA exhibits a strong pT dependence with a large suppression at high pT and an increase to unity for decreasing pT. When integrating over the measured momentum range pT<10 GeV/c, the J/ψ RAA shows a weak centrality dependence. Each measurement is compared with results at lower center-of-mass energies and with ALICE measurements at forward rapidity, as well as to theory calculations. All reported features of the J/ψ production at low pT are consistent with a dominant contribution to the J/ψ yield originating from charm quark (re)combination.
This paper presents the first measurements of the charge independent (CI) and charge dependent (CD) two-particle transverse momentum correlators GCI 2 and GCD 2 in Pb–Pb collisions at √sNN = 2.76 TeV by the ALICE collaboration. The two-particle transverse momentum correlator G2 was introduced as a measure of the momentum current transfer between neighboring system cells. The correlators are measured as a function of pair separation in pseudorapidity (Δη) and azimuth (Δφ) and as a function of collision centrality. From peripheral to central collisions, the correlator GCI 2 exhibits a longitudinal broadening while undergoing a monotonic azimuthal narrowing. By contrast, GCD 2 exhibits a narrowing along both dimensions. These features are not reproduced by models such as HIJING and AMPT. However, the observed narrowing of the correlators from peripheral to central collisions is expected to result from the stronger transverse flow profiles produced in more central collisions and the longitudinal broadening is predicted to be sensitive to momentum currents and the shear viscosity per unit of entropy density η/s of the matter produced in the collisions. The observed broadening is found to be consistent with the hypothesized lower bound of η/s and is in qualitative agreement with values obtained from anisotropic flow measurements.
This Letter presents the first direct investigation of the p–0 interaction, using the femtoscopy technique in high-multiplicity pp collisions at √s = 13 TeV measured by the ALICE detector. The 0 is reconstructed via the decay channel to Λγ, and the subsequent decay of Λ to pπ−. The photon is detected via the conversion in material to e+e− pairs exploiting the capability of the ALICE detector to measure electrons at low transverse momenta. The measured p–0 correlation indicates a shallow strong interaction. The comparison of the data to several theoretical predictions obtained employing the Correlation Analysis Tool using the Schrödinger Equation (CATS) and the Lednický–Lyuboshits approach shows that the current experimental precision does not yet allow to discriminate between different models, as it is the case for the available scattering and hypernuclei data. Nevertheless, the p–0 correlation function is found to be sensitive to the strong interaction, and driven by the interplay of the different spin and isospin channels. This pioneering study demonstrates the feasibility of a femtoscopic measurement in the p–0 channel and with the expected larger data samples in LHC Run 3 and Run 4, the p–0 interaction will be constrained with high precision.
Multiplicity dependence of light (anti-)nuclei production in p–Pb collisions at √sNN =5.02 TeV
(2020)
The measurement of the deuteron and anti-deuteron production in the rapidity range −1 < y < 0 as a function of transverse momentum and event multiplicity in p–Pb collisions at √sNN = 5.02 TeV is presented. (Anti-)deuterons are identified via their specific energy loss dE/dx and via their time-offlight. Their production in p–Pb collisions is compared to pp and Pb–Pb collisions and is discussed within the context of thermal and coalescence models. The ratio of integrated yields of deuterons to protons (d/p) shows a significant increase as a function of the charged-particle multiplicity of the event starting from values similar to those observed in pp collisions at low multiplicities and approaching those observed in Pb–Pb collisions at high multiplicities. The mean transverse particle momenta are extracted from the deuteron spectra and the values are similar to those obtained for p and particles. Thus, deuteron spectra do not follow mass ordering. This behaviour is in contrast to the trend observed for non-composite particles in p–Pb collisions. In addition, the production of the rare 3He and 3He nuclei has been studied. The spectrum corresponding to all non-single diffractive p-Pb collisions is obtained in the rapidity window −1 < y < 0 and the pT-integrated yield dN/dy is extracted. It is found that the yields of protons, deuterons, and 3He, normalised by the spin degeneracy factor, follow an exponential decrease with mass number.
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.
Pion-kaon femtoscopy and the lifetime of the hadronic phase in Pb-Pb collisions at √sNN = 2.76 TeV
(2021)
In this paper, the first femtoscopic analysis of pion–kaon correlations at the LHC is reported. The analysis was performed on the Pb–Pb collision data at √sNN = 2.76 TeV recorded with the ALICE detector. The non-identical particle correlations probe the spatio-temporal separation between sources of different particle species as well as the average source size of the emitting system. The sizes of the pion and kaon sources increase with centrality, and pions are emitted closer to the centre of the system and/or later than kaons. This is naturally expected in a system with strong radial flow and is qualitatively reproduced by hydrodynamic models. ALICE data on pion–kaon emission asymmetry are consistent with (3+1)-dimensional viscous hydrodynamics coupled to a statistical hadronisation model, resonance propagation, and decay code THERMINATOR 2 calculation, with an additional time delay between 1 and 2 fm/c for kaons. The delay can be interpreted as evidence for a significant hadronic rescattering phase in heavy-ion collisions at the LHC.
Multiplicity dependence of inclusive J/ψ production at midrapidity in pp collisions at √s = 13 TeV
(2020)
Measurements of the inclusive J/ψ yield as a function of charged-particle pseudorapidity density dNch/dη in pp collisions at √s = 13 TeV with ALICE at the LHC are reported. The J/ψ meson yield is measured at midrapidity (|y| < 0.9) in the dielectron channel, for events selected based on the charged-particle multiplicity at midrapidity (|η| < 1) and at forward rapidity (−3.7 < η < −1.7 and 2.8 < η < 5.1); both observables are normalized to their corresponding averages in minimum bias events. The increase of the normalized J/ψ yield with normalized dNch/dη is significantly stronger than linear and dependent on the transverse momentum. The data are compared to theoretical predictions, which describe the observed trends well, albeit not always quantitatively.
Measurements of K∗(892)0 and φ(1020) resonance production in Pb–Pb and pp collisions at √sNN = 5.02 TeV with the ALICE detector at the Large Hadron Collider are reported. The resonances are measured at midrapidity (|y| < 0.5) via their hadronic decay channels and the transverse momentum (pT) distributions are obtained for various collision centrality classes up to pT = 20 GeV/c. The pT-integrated yield ratio K∗(892)0/K in Pb–Pb collisions shows significant suppression relative to pp collisions and decreases towards more central collisions. In contrast, the φ(1020)/K ratio does not show any suppression. Furthermore, the measured K∗(892)0/K ratio in central Pb–Pb collisions is significantly suppressed with respect to the expectations based on a thermal model calculation, while the φ(1020)/K ratio agrees with the model prediction. These measurements are an experimental demonstration of rescattering of K∗(892)0 decay products in the hadronic phase of the collisions. The K∗(892)0/K yield ratios in Pb–Pb and pp collisions are used to estimate the time duration between chemical and kinetic freeze-out, which is found to be ∼ 4–7 fm/c for central collisions. The pT-differential ratios of K∗(892)0/K, φ(1020)/K, K∗(892)0/π , φ(1020)/π , p/K∗(892)0 and p/φ(1020) are also presented for Pb–Pb and pp collisions at √sNN = 5.02 TeV. These ratios show that the rescattering effect is predominantly a low-pT phenomenon.
The first evidence of spin alignment of vector mesons (K*0 and ϕ) in heavy-ion collisions at the Large Hadron Collider (LHC) is reported. The spin density matrix element ρ00 is measured at midrapidity (|y|< 0.5) in Pb-Pb collisions at a center-of-mass energy (√sNN) of 2.76 TeV
with the ALICE detector. ρ00 values are found to be less than 1/3 (1/3 implies no spin alignment) at low transverse momentum (pT<2 GeV/c) for K*0 and ϕ at a level of 3σ and 2σ, respectively. No significant spin alignment is observed for the K0S meson (spin = 0) in Pb-Pb collisions and for the vector mesons in pp collisions. The measured spin alignment is unexpectedly large but qualitatively consistent with the expectation from models which attribute it to a polarization of quarks in the presence of angular momentum in heavy-ion collisions and a subsequent hadronization by the process of recombination.
The transverse momentum (pT) differential yields of (anti-)3He and (anti-)3H measured in p-Pb collisions at sNN−−−√ = 5.02 TeV with ALICE at the Large Hadron Collider (LHC) are presented. The ratios of the pT-integrated yields of (anti-)3He and (anti-)3H to the proton yields are reported, as well as the pT dependence of the coalescence parameters B3 for (anti-)3He and (anti-)3H. For (anti-)3He, the results obtained in four classes of the mean charged-particle multiplicity density are also discussed. These results are compared to predictions from a canonical statistical hadronization model and coalescence approaches. An upper limit on the total yield of 4He¯ is determined.