Refine
Year of publication
Document Type
- Preprint (570)
- Article (384)
- Conference Proceeding (7)
- Working Paper (4)
- Book (1)
- Part of a Book (1)
Has Fulltext
- yes (967)
Is part of the Bibliography
- no (967)
Keywords
- Heavy Ion Experiments (18)
- Hadron-Hadron scattering (experiments) (11)
- LHC (9)
- Heavy-ion collision (6)
- ALICE experiment (4)
- Hadron-Hadron Scattering (4)
- Quark-Gluon Plasma (4)
- ALICE (3)
- Heavy Ions (3)
- Jets and Jet Substructure (3)
- glioblastoma (3)
- pp collisions (3)
- Acute myeloid leukemia (2)
- Beauty production (2)
- Charm physics (2)
- Experimental nuclear physics (2)
- Experimental particle physics (2)
- HOD (2)
- Induction chemotherapy (2)
- Intensive care treatment (2)
- Jets (2)
- Lepton-Nucleon Scattering (experiments) (2)
- Particle and resonance production (2)
- Particle correlations and fluctuations (2)
- Pb–Pb collisions (2)
- Polymers (2)
- Single electrons (2)
- Survival (2)
- glioma (2)
- resilience (2)
- 900 GeV (1)
- ACLF (1)
- ALICE detector (1)
- AML (1)
- ASCT (1)
- ATR-FTIR (1)
- Abundance (1)
- Acute kidney failure (1)
- Alzheimer’s dementia (1)
- Amyloid-beta 42 (1)
- Anti-kaon–nucleon physics (1)
- Anti-nuclei (1)
- Aphasia (1)
- Aphasie (1)
- Arcuate fascicle (1)
- Atomic and Molecular Physics (1)
- Autecology (1)
- BRAF (1)
- BRAF V600E (1)
- Baryonic resonances (1)
- Biomarkers (1)
- Bone marrow aspiration (1)
- Brain metastasis (1)
- Brain tumor (1)
- Breast cancer (1)
- CBC (1)
- CHIP (1)
- CLOUD experiment (1)
- CMS (1)
- CVID (1)
- Cancer treatment (1)
- Centrality Class (1)
- Centrality Selection (1)
- Chemistry (1)
- Collective Flow (1)
- Comparison with QCD (1)
- Ecology (1)
- Ecotoxicology (1)
- Electron-pion identification (1)
- Electroweak interaction (1)
- Ellenberg indicator values (1)
- Elliptic flow (1)
- Environmental quality (1)
- Environmental sciences (1)
- European Society for Immunodeficiencies (ESID) (1)
- Fasciculus arcuatus (1)
- Feeding types (1)
- Femtoscopy (1)
- Festuco-Brometea (1)
- Fibre/foam sandwich radiator (1)
- Fluid overload (1)
- Freezeout (1)
- Freshwater (1)
- German PID-NET registry (1)
- Glioma (1)
- HBT (1)
- HVPG (1)
- Hadron production (1)
- Hadron-Hadron Scattering Heavy (1)
- Hadron-hadron interactions (1)
- Heavy Ion Experiment (1)
- Heavy Quark Production (1)
- Heavy flavor production (1)
- Heavy flavour production (1)
- Heavy ions (1)
- Heavy-flavour decay muons (1)
- Heavy-flavour production (1)
- Heavy-ion collisions (1)
- Heavy-ion reactions (1)
- Hippocampal volume (1)
- Hirninfarkt (1)
- Holmes tremor (1)
- Hyperons (1)
- IgG substitution therapy (1)
- Imidacloprid (1)
- Inclusive spectra (1)
- Intensity interferometry (1)
- Invariant Mass Distribution (1)
- Invertebrates (1)
- Ionisation energy loss (1)
- Ischemic stroke (1)
- Kaonic nuclei (1)
- Kollisionen schwerer Ionen (1)
- Lacunar (1)
- Lakunär (1)
- Lesions (1)
- Litter (1)
- Low energy QCD (1)
- MRI (1)
- Microplastic-biota interaction (1)
- Microplastics (1)
- Mid-rapidity (1)
- Mild cognitive impairment (1)
- Minimum Bias (1)
- Molecular matched therapy (1)
- Molecular profiling (1)
- Monitoring (1)
- Monte Carlo (1)
- Multi-strange baryons (1)
- Multi-wire proportional drift chamber (1)
- Multiple stressors (1)
- Nanoplastics (1)
- Necrosis (1)
- Neural network (1)
- Non-small cell lung cancer (1)
- Nuclear modification factor (1)
- Nucleus (1)
- PID prevalence (1)
- PXA (1)
- PYTHIA (1)
- Partial wave analysis (1)
- Particle Correlations and Fluctuations (1)
- Pb–Pb (1)
- Peripheral blood smears (1)
- Phospho-tau (1)
- Plastic polymers (1)
- Plastics (1)
- Prediction (1)
- Production Cross Section (1)
- Properties of Hadrons (1)
- Proton (1)
- Proton–proton (1)
- Pyrolysis GC–MS (1)
- QCD (1)
- QMD (1)
- Quantenmolekulardynamik (1)
- Quark Gluon Plasma (1)
- Quark Production (1)
- Quark gluon plasma (1)
- Rapidity Range (1)
- Relapse surveillance (1)
- Relativistic heavy ion physics (1)
- Relativistic heavy-ion collisions (1)
- Resolution Parameter (1)
- Review (1)
- Single muons (1)
- Stereotactic radiosurgery (1)
- Strangeness (1)
- Subcortical (1)
- Subkortikal (1)
- Suspended solids (1)
- Systematic Uncertainty (1)
- TR (1)
- Targeted therapy (1)
- Tau (1)
- Thermal desorption GC–MS (1)
- Time Projection Chamber (1)
- Toxicity (1)
- Tracking (1)
- Transition radiation detector (1)
- Transverse momentum (1)
- Trigger (1)
- Vector (1)
- Vector Boson Production (1)
- Visual analysis (1)
- Water framework directive (1)
- Xenon-based gas mixture (1)
- acute decompensation (1)
- aerosol formation (1)
- aerosols (1)
- anti-angiogenic therapy (1)
- asset pricing (1)
- autologous stem cell transplantation (1)
- bevacizumab (1)
- cerebellar mutism (1)
- cerebellum (1)
- chemotherapy (1)
- cirrhosis (1)
- clonal dominance (1)
- clonal hematopoiesis (1)
- cortex, gray matter (1)
- credit risk (1)
- dE/dx (1)
- dabrafenib (1)
- diffusion tensor imaging (1)
- dispersal (1)
- ecological strategy (1)
- equity options (1)
- fractional anisotropy (1)
- gliomatosis cerebri growth pattern (1)
- heavy ion collisions (1)
- heavy ion experiments (1)
- hematopoietic stem cells (1)
- hematopoietic stress (1)
- hydrocephalus (1)
- hypoxia (1)
- intestinal manipulation (1)
- intraventricular chemotherapy (1)
- isolation (1)
- leptomeningeal disease (1)
- leptomeningeal metastases (1)
- leukemia (1)
- low risk anomaly (1)
- mean diffusivity (1)
- medulloblastoma (1)
- medulloblastoma resection (1)
- mowing (1)
- multiple sclerosis (1)
- nanoparticle growth (1)
- naturalness (1)
- neurosurgery (1)
- palatal tremor (1)
- pandemics (1)
- patterns of progression (1)
- perioperative ischemia (1)
- phenology (1)
- plant traits (1)
- pleomorphic xanthoastrocytoma (1)
- portal pressure (1)
- posterior fossa masses (1)
- ppK − (1)
- primary brain tumors (1)
- primary immunodeficiency (PID) (1)
- quant molekular dynamic (1)
- quark gluon plasma (1)
- rare disasters (1)
- registry for primary immunodeficiency (1)
- risk premia (1)
- skewness (1)
- social distance (1)
- somatic mutations (1)
- spectra (1)
- surgery (1)
- ventriculoperitoneal shunt (1)
- volatile organic compounds (1)
- √sN N = 2.76 TeV (1)
Institute
Measurements of the production of muons from heavy-flavour hadron decays in Pb−Pb collisions at sNN−−−√ = 5.02 and 2.76 TeV using the ALICE detector at the LHC are reported. The nuclear modification factor RAA at sNN−−−√ = 5.02 TeV is measured at forward rapidity (2.5<y<4) as a function of transverse momentum pT in central, semi-central, and peripheral collisions over a wide pT interval, 3<pT<20 GeV/c, in which a significant contribution of muons from beauty-hadron decays is expected at high pT. With a significantly improved precision compared to the measurements at lower collision energy, the RAA shows an increase of the suppression of the yields of muons from heavy-flavour hadron decays with increasing centrality. A suppression by a factor of about three is observed in the 10% most central collisions. The RAA at sNN−−−√ = 5.02 is similar to that reported at 2.76 TeV in a broader pT interval and with an improved accuracy with respect to previously published measurements. The precise RAA results have the potential to distinguish between model predictions implementing different mechanisms of parton energy loss in the high-density medium formed in heavy-ion collisions. The results place stringent constraints on the relative energy loss between charm and beauty quarks.
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.
The first measurements of the production of muons and electrons from heavy-flavour hadron decays in Xe-Xe collisions at sNN−−−√ = 5.44 TeV, using the ALICE detector at the LHC, are reported. The measurement of the nuclear modification factor RAA is performed as a function of transverse momentum pT in several centrality classes at forward rapidity (2.5<y<4) and midrapidity (|y|<0.8) for muons and electrons from heavy-flavour hadron decays, respectively. A suppression by a factor up to about 2.5 compared to the binary-scaled pp reference is observed in central collisions at both central and forward rapidities. The RAA of muons from heavy-flavour hadron decays is compared to previous measurements in Pb-Pb collisions at sNN−−−√ = 5.02 TeV. When the nuclear modification factors are compared in the centrality classes 0-10% for Xe-Xe collisions and 10-20% for Pb-Pb collisions, which have similar charged-particle multiplicity density, a similar suppression, with RAA∼0.4 in the pT interval 4<pT<8 GeV/c, is observed. The comparison of the measured RAA values in the two collision systems brings new insights on the properties of the quark-gluon plasma by investigating the system-size and path-length dependence of medium-induced parton energy loss. The results of muons and electrons from heavy-flavour hadron decays provide new constraints to model calculations.
The first measurements of the production of muons and electrons from heavy-flavour hadron decays in Xe-Xe collisions at sNN−−−√ = 5.44 TeV, using the ALICE detector at the LHC, are reported. The measurement of the nuclear modification factor RAA is performed as a function of transverse momentum pT in several centrality classes at forward rapidity (2.5<y<4) and midrapidity (|y|<0.8) for muons and electrons from heavy-flavour hadron decays, respectively. A suppression by a factor up to about 2.5 compared to the binary-scaled pp reference is observed in central collisions at both central and forward rapidities. The RAA of muons from heavy-flavour hadron decays is compared to previous measurements in Pb-Pb collisions at sNN−−−√ = 5.02 TeV. A similar suppression, with RAA∼0.4 in the pT interval 4<pT<8 GeV/c, is observed in Pb-Pb and Xe-Xe collisions when the nuclear modification factors are compared in event classes with similar charged-particle multiplicity density. The comparison of the measured RAA values in the two collision systems brings new insights on the properties of the quark-gluon plasma by investigating the system-size and path-length dependence of medium-induced parton energy loss. The results of muons and electrons from heavy-flavour hadron decays provide new constraints to model calculations.
Deuteron production in high-energy collisions is sensitive to the space-time evolution of the collision system, and is typically described by a coalescence mechanism. For the first time, we present results on jet-associated deuteron production in \pp\ collisions at s√=13 TeV, providing an opportunity to test the established picture for deuteron production in events with a hard scattering. Using a trigger particle with high transverse-momentum (pT>5 GeV/c) as a proxy for the presence of a jet at midrapidity, we observe a measurable population of deuterons being produced around the jet proxy. The associated deuteron yield measured in a narrow angular range around the trigger particle differs by 2.4-4.8 standard deviations from the uncorrelated background. The data are described by PYTHIA model calculations featuring baryon coalescence.
Deuteron production in high-energy collisions is sensitive to the space-time evolution of the collision system, and is typically described by a coalescence mechanism. For the first time, we present results on jet-associated deuteron production in \pp\ collisions at s√=13 TeV, providing an opportunity to test the established picture for deuteron production in events with a hard scattering. Using a trigger particle with high transverse-momentum (pT>5 GeV/c) as a proxy for the presence of a jet at midrapidity, we observe a measurable population of deuterons being produced around the jet proxy. The associated deuteron yield measured in a narrow angular range around the trigger particle differs by 2.4-4.8 standard deviations from the uncorrelated background. The data are described by PYTHIA model calculations featuring baryon coalescence.
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.