Refine
Year of publication
Document Type
- Preprint (633)
- Article (370)
- Contribution to a Periodical (3)
- Working Paper (2)
Has Fulltext
- yes (1008)
Is part of the Bibliography
- no (1008)
Keywords
- Heavy Ion Experiments (19)
- Hadron-Hadron Scattering (11)
- Hadron-Hadron scattering (experiments) (11)
- Heavy-ion collision (6)
- Collective Flow (4)
- Jets (4)
- LHC (4)
- Quark-Gluon Plasma (4)
- Heavy Ions (3)
- Jets and Jet Substructure (3)
- ALICE experiment (2)
- COVID-19 (2)
- Charm physics (2)
- Experimental nuclear physics (2)
- Experimental particle physics (2)
- Germany (2)
- Particle Correlations and Fluctuations (2)
- Particle and resonance production (2)
- Particle correlations and fluctuations (2)
- Pb–Pb collisions (2)
- QCD (2)
- acute myeloid leukemia (2)
- childhood acute myeloid leukemia (2)
- relapse (2)
- salvage therapy (2)
- 3years (1)
- 900 GeV (1)
- ALICE (1)
- ALICE detector (1)
- ALK-rearranged NSCLC (1)
- Active middle ear implants (1)
- Acute kidney injury (1)
- Alcorrín (1)
- Animal model (1)
- Anti-nuclei (1)
- Auditory system (1)
- Autologous stem cell transplantation (1)
- Beauty production (1)
- Bike-Sharing (1)
- Bipolar disorder (1)
- Blood loss (1)
- Bone conduction devices (1)
- Bone tumor (1)
- Boosted Jets (1)
- Bronce Final (1)
- CTLA-4 (1)
- CVD biomarker (1)
- Car-Sharing (1)
- Centrality Class (1)
- Centrality Selection (1)
- Cleanliness level (1)
- Collective Flow, (1)
- Colloids (1)
- Colon capsule endoscopy (1)
- Complementation rate (1)
- Congenital ocular motor apraxia (1)
- Consensus statement (1)
- Couch tracking (1)
- DME (1)
- DNA methylation (1)
- Deutschland (1)
- Diagnostic markers (1)
- EBV (1)
- Early Iron Age (1)
- Electron-pion identification (1)
- Electroweak interaction (1)
- Elektromobilität (1)
- Elliptic flow (1)
- Endocrine cancer (1)
- Estrecho de Gibraltar (1)
- Extended donor criteria (1)
- Fibre/foam sandwich radiator (1)
- Flottenkonzepte (1)
- Forschung (1)
- Fortifica (1)
- General relativity (1)
- General relativity equations & solutions (1)
- Gimbaled tracking (1)
- Graft function (1)
- Graft survival (1)
- HES (1)
- HNO (1)
- Hadron-Hadron Scattering Heavy (1)
- Hadron-hadron interactions (1)
- Hals-Nasen-Ohren-Heilkunde (1)
- Hard Scattering (1)
- Health policy (1)
- Heavy Ion Experiment (1)
- Heavy Quark Production (1)
- Heavy ions (1)
- Heavy-flavour decay muons (1)
- Heavy-flavour production (1)
- High-dose chemotherapy (1)
- Hydroxyethyl starch (1)
- ILUVIEN (1)
- IgG4-related disease (1)
- Incomplete colonoscopy (1)
- Indeterminate biliary stricture (1)
- Indigenous Peoples (1)
- Invariant Mass Distribution (1)
- Ionisation energy loss (1)
- Jet Physics (1)
- Jet Substructure (1)
- Joubert syndrome (1)
- Krebsforschung (1)
- LTER (1)
- Ladeinfrastruktur (1)
- Late Bronze Age (1)
- Lehre (1)
- Lenalidomide (1)
- Lepton-Nucleon Scattering (experiments) (1)
- Liver transplantation (1)
- Long‐term ecosystem research (1)
- Low volume prep (1)
- MLC tracking (1)
- Marginal grafts (1)
- Minimum Bias (1)
- Mixed hearing loss (1)
- Mobil-Stationen (1)
- Molar tooth sign (1)
- Monte Carlo (1)
- Moviprep (1)
- Multi-Parton Interactions (1)
- Multi-stakeholder approach (1)
- Multi-wire proportional drift chamber (1)
- Multiple myeloma (1)
- Neural network (1)
- Neuroendocrine cancer (1)
- Next-generation sequencing (1)
- Nucleosynthesis in explosive environments (1)
- ORL (1)
- Organ motion (1)
- Organ rinse (1)
- Organ shortage (1)
- Otorhinolaryngology (1)
- PCR (1)
- PD-1 (1)
- PYTHIA (1)
- Particle and Resonance Production (1)
- Pedelecs (1)
- Phoenician Writing (1)
- Phoenicians (1)
- Phospho-soda (1)
- PillCamColon2 (1)
- Polyps (1)
- Primera Edad del Hierro (1)
- Production Cross Section (1)
- Properties of Hadrons (1)
- Quark Deconfinement (1)
- Quark Production (1)
- Quark gluon plasma (1)
- Quarkonium (1)
- Rabbit (1)
- Radiofrequency ablation (1)
- Rapidity Range (1)
- Rehabilitation (1)
- Relapse (1)
- Relativistic heavy ion physics (1)
- Relativistic heavy-ion collisions (1)
- Research (1)
- Research infrastructure (1)
- Residency (1)
- Resolution Parameter (1)
- Retro-IDEAL (1)
- Robotic tracking (1)
- SARS-CoV-2 (1)
- SARS-CoV‑2 pandemic (1)
- SARS-CoV‑2-Pandemie (1)
- Second-line treatment (1)
- Single electrons (1)
- Site networks (1)
- Specialist training (1)
- Steroid (1)
- Strait of Gibraltar (1)
- Surgery (1)
- Systematic Uncertainty (1)
- TP53 mutation status (1)
- TR (1)
- Tacrolimus (1)
- Teaching (1)
- Technical data (1)
- Time Projection Chamber (1)
- Tracking (1)
- Transient & explosive astronomical phenomena (1)
- Transition radiation detector (1)
- Transverse momentum (1)
- Trauma (1)
- Trigger (1)
- Tumor therapy (1)
- Umweltbilanz (1)
- University hospitals (1)
- Universitätskliniken (1)
- VX-2 (1)
- Vector Boson Production (1)
- Volume therapy (1)
- Weiterbildung (1)
- Xenon-based gas mixture (1)
- adolescents’ health (1)
- advanced melanoma (1)
- allocation (1)
- bile duct stenosis (1)
- biliary stricture (1)
- biofilm (1)
- child (1)
- cholangiocarcinoma (1)
- complete response (1)
- dE/dx (1)
- dental implant (1)
- discontinuation (1)
- disease progression (1)
- ectosomes (1)
- electrolytic cleaning (1)
- endoscopic retrograde cholangiopancreatography (1)
- endoscopy (1)
- eosinophilic cholangitis (1)
- escritura fenicia (1)
- exosomes (1)
- extracellular vesicles (1)
- fenicios (1)
- fortificación, (1)
- fourth (1)
- graft (1)
- guidelines (1)
- heavy ion experiments (1)
- immune checkpoint blockade (1)
- immunohistochemistry (1)
- indígenas (1)
- infection (1)
- kidney (1)
- kidney transplantation (1)
- liver metastasis (1)
- liver transplantation (1)
- loss (1)
- microdosing (1)
- microparticles (1)
- microsatellite instability (1)
- microvesicles (1)
- minimal information requirements (1)
- multidrug resistance (1)
- multisite cooperation (1)
- neutralizing antibodies (1)
- nocardia (1)
- nocardiosis (1)
- paediatric nephrology (1)
- pediatric (1)
- pediatric patients (1)
- periimplantitis (1)
- perio-prosthetic joint infection (1)
- personalized oncology (1)
- pp collisions (1)
- primary sclerosing cholangitis (1)
- pulmonary nocardiosis (1)
- quark gluon plasma (1)
- re-transplantation (1)
- recurrent cholangitis (1)
- repeated (1)
- reproducibility (1)
- research consortium (1)
- rigor (1)
- risk factor progression (1)
- risk factors (1)
- second-line immunotherapy (1)
- sequential ALK-inhibitor therapy (1)
- short-course antibiotic therapy (1)
- spike protein (1)
- standardization (1)
- survival (1)
- targeted therapy (1)
- third (1)
- transfer (1)
- transition (1)
- translational cancer research (1)
- treatment resistance (1)
- uveal melanoma (1)
- variants of concern (1)
Institute
- Physik (957)
- Frankfurt Institute for Advanced Studies (FIAS) (886)
- Informatik (855)
- Medizin (36)
- Informatik und Mathematik (3)
- Präsidium (3)
- Geographie (2)
- Geowissenschaften (2)
- Hochschulrechenzentrum (2)
- Biowissenschaften (1)
Electrons from heavy-flavour hadron decays (charm and beauty) were measured with the ALICE detector in Pb–Pb collisions at a centre-of-mass of energy √sNN = 2.76 TeV. The transverse momentum (pT) differential production yields at mid-rapidity were used to calculate the nuclear modification factor RAA in the interval 3 < pT < 18 GeV/c. The RAA shows a strong suppression compared to binary scaling of pp collisions at the same energy (up to a factor of 4) in the 10% most central Pb–Pb collisions. There is a centrality trend of suppression, and a weaker suppression (down to a factor of 2) in semi-peripheral (50–80%) collisions is observed. The suppression of electrons in this broad pT interval indicates that both charm and beauty quarks lose energy when they traverse the hot medium formed in Pb–Pb collisions at LHC.
The production of π±, K±, K0S, K∗(892)0, p, ϕ(1020), Λ, Ξ−, Ω−, and their antiparticles was measured in inelastic proton–proton (pp) collisions at a center-of-mass energy of s√ = 13 TeV at midrapidity (|y|<0.5) as a function of transverse momentum (pT) using the ALICE detector at the CERN LHC. Furthermore, the single-particle pT distributions of K0S, Λ, and Λ¯¯¯¯ in inelastic pp collisions at s√=7 TeV are reported here for the first time. The pT distributions are studied at midrapidity within the transverse momentum range 0≤pT≤20 GeV/c, depending on the particle species. The pT spectra, integrated yields, and particle yield ratios are discussed as a function of collision energy and compared with measurements at lower s√ and with results from various general-purpose QCD-inspired Monte Carlo models. A hardening of the spectra at high pT with increasing collision energy is observed, which is similar for all particle species under study. The transverse mass and xT≡2pT/s√ scaling properties of hadron production are also studied. As the collision energy increases from s√ = 7–13 TeV, the yields of non- and single-strange hadrons normalized to the pion yields remain approximately constant as a function of s√, while ratios for multi-strange hadrons indicate enhancements. The pT-differential cross sections of π±, K± and p (p¯¯¯) are compared with next-to-leading order perturbative QCD calculations, which are found to overestimate the cross sections for π± and p (p¯¯¯) at high pT.
Inclusive ψ(2S) production is measured in p-Pb collisions at the centre-of-mass energy per nucleon-nucleon pair sNN−−−√ = 8.16 TeV, using the ALICE detector at the CERN LHC. The production of ψ(2S) is studied at forward (2.03 < ycms < 3.53) and backward (−4.46 < ycms < −2.96) centre-of-mass rapidity and for transverse momentum pT < 12 GeV/c via the decay to muon pairs. In this paper, we report the integrated as well as the ycms- and pT-differential inclusive production cross sections. Nuclear effects on ψ(2S) production are studied via the determination of the nuclear modification factor that shows a strong suppression at both forward and backward centre-of-mass rapidities. Comparisons with corresponding results for inclusive J/ψ show a similar suppression for the two states at forward rapidity (p-going direction), but a stronger suppression for ψ(2S) at backward rapidity (Pb-going direction). As a function of pT, no clear dependence of the nuclear modification factor is found. The relative size of nuclear effects on ψ(2S) production compared to J/ψ is also studied via the double ratio of production cross sections [σψ(2S)/σJ/ψ]pPb/[σψ(2S)/σJ/ψ]pp between p-Pb and pp collisions. The results are compared with theoretical models that include various effects related to the initial and final state of the collision system and also with previous measurements at sNN−−−√ = 5.02 TeV.
Charged-particle spectra at midrapidity are measured in Pb–Pb collisions at the centre-of-mass energy per nucleon–nucleon pair √sNN = 5.02 TeV and presented in centrality classes ranging from most central (0–5%) to most peripheral (95–100%) collisions. Possible medium effects are quantified using the nuclear modification factor (RAA) by comparing the measured spectra with those from proton–proton collisions, scaled by the number of independent nucleon–nucleon collisions obtained from a Glauber model. At large transverse momenta (8 < pT < 20 GeV/c), the average RAA is found to increase from about 0.15 in 0–5% central to a maximum value of about 0.8 in 75–85% peripheral collisions, beyond which it falls off strongly to below 0.2 for the most peripheral collisions. Furthermore, RAA initially exhibits a positive slope as a function of pT in the 8–20 GeV/c interval, while for collisions beyond the 80% class the slope is negative. To reduce uncertainties related to event selection and normalization, we also provide the ratio of RAA in adjacent centrality intervals. Our results in peripheral collisions are consistent with a PYTHIA-based model without nuclear modification, demonstrating that biases caused by the event selection and collision geometry can lead to the apparent suppression in peripheral collisions. This explains the unintuitive observation that RAA is below unity in peripheral Pb–Pb, but equal to unity in minimum-bias p–Pb collisions despite similar charged-particle multiplicities.
Transverse-momentum (pT) differential yields of electrons from semileptonic heavy-flavour hadron decays have been measured in the most central (0–10%) and in semi-central (20–40%) Pb–Pb collisions at sNN−−−√=2.76 TeV. The corresponding production cross section in pp collisions has been measured at the same energy with substantially reduced systematic uncertainties with respect to previously published results. The modification of the yield in Pb–Pb collisions with respect to the expectation from an incoherent superposition of nucleon-nucleon collisions is quantified at mid-rapidity (|y| < 0.8) in the pT interval 0.5–3 GeV/c via the nuclear modification factor, RAA. This paper extends the pT reach of the RAA measurement towards significantly lower values with respect to a previous publication. In Pb–Pb collisions the pT-differential measurements of yields at low pT are essential to investigate the scaling of heavy-flavour production with the number of binary nucleon-nucleon collisions. Heavy-quark hadronization, a collective expansion and even initial-state effects, such as the nuclear modification of the Parton Distribution Function, are also expected to have a significant effect on the measured distribution.
In this letter, the production of deuterons and anti-deuterons in pp collisions at √s = 7 TeV is studied as a function of the charged-particle multiplicity density at mid-rapidity with the ALICE detector at the LHC. Production yields are measured at mid-rapidity in five multiplicity classes and as a function of the deuteron transverse momentum (pT). The measurements are discussed in the context of hadron–coalescence models. The coalescence parameter B2, extracted from the measured spectra of (anti-)deuterons and primary (anti-)protons, exhibits no significant pT-dependence for pT < 3 GeV/c, in agreement with the expectations of a simple coalescence picture. At fixed transverse momentum per nucleon, the B2 parameter is found to decrease smoothly from low multiplicity pp to Pb–Pb collisions, in qualitative agreement with more elaborate coalescence models. The measured mean transverse momentum of (anti-)deuterons in pp is not reproduced by the Blast-Wave model calculations that simultaneously describe pion, kaon and proton spectra, in contrast to central Pb–Pb collisions. The ratio between the pT-integrated yield of deuterons to protons, d/p, is found to increase with the chargedparticle multiplicity, as observed in inelastic pp collisions at different centre-of-mass energies. The d/p ratios are reported in a wide range, from the lowest to the highest multiplicity values measured in pp collisions at the LHC.
Inclusive J/ψ production is studied in Xe–Xe interactions at a centre-of-mass energy per nucleon pair of √sNN = 5.44 TeV, using the ALICE detector at the CERN LHC. The J/ψ meson is reconstructed via its decay into a muon pair, in the centre-of-mass rapidity interval 2.5 < y < 4 and down to zero transverse momentum. In this Letter, the nuclear modification factors RAA for inclusive J/ψ, measured in the centrality range 0–90% as well as in the centrality intervals 0–20% and 20–90% are presented. The RAA values are compared to previously published results for Pb–Pb collisions at √sNN = 5.02 TeV and to the calculation of a transport model. A good agreement is found between Xe–Xe and Pb–Pb results as well as between data and the model.
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.
A measurement of beauty hadron production at mid-rapidity in proton-lead collisions at a nucleon–nucleon centre-of-mass energy sNN−−−√=5.02 TeV is presented. The semi-inclusive decay channel of beauty hadrons into J/ψ is considered, where the J/ψ mesons are reconstructed in the dielectron decay channel at mid-rapidity down to transverse momenta of 1.3 GeV/c. The bb¯ production cross section at mid-rapidity, dσbb¯/dy, and the total cross section extrapolated over full phase space, σbb¯, are obtained. This measurement is combined with results on inclusive J/ψ production to determine the prompt J/ψ cross sections. The results in p–Pb collisions are then scaled to expectations from pp collisions at the same centre-of-mass energy to derive the nuclear modification factor RpPb, and compared to models to study possible nuclear modifications of the production induced by cold nuclear matter effects. RpPb is found to be smaller than unity at low pT for both J/ψ coming from beauty hadron decays and prompt J/ψ.
Inclusive J/ψ production at forward and backward rapidity in p–Pb collisions at √sNN = 8.16 TeV
(2018)
Inclusive J/ψ production is studied in p-Pb interactions at a centre-of-mass energy per nucleon-nucleon collision sNN−−−√=8.16 TeV, using the ALICE detector at the CERN LHC. The J/ψ meson is reconstructed, via its decay to a muon pair, in the centre-of-mass rapidity intervals 2.03 < ycms < 3.53 and −4.46 < ycms < −2.96, where positive and negative ycms refer to the p-going and Pb-going direction, respectively. The transverse momentum coverage is pT < 20 GeV/c. In this paper, ycms- and pT-differential cross sections for inclusive J/ψ production are presented, and the corresponding nuclear modification factors RpPb are shown. Forward results show a suppression of the J/ψ yield with respect to pp collisions, concentrated in the region pT ≲ 5 GeV/c. At backward rapidity no significant suppression is observed. The results are compared to previous measurements by ALICE in p-Pb collisions at sNN−−−√=5.02 TeV and to theoretical calculations. Finally, the ratios RFB between forward- and backward-ycms RpPb values are shown and discussed.