Refine
Year of publication
Document Type
- Preprint (667)
- Article (431)
- Part of a Book (7)
- Working Paper (2)
Has Fulltext
- yes (1107)
Keywords
- Heavy Ion Experiments (20)
- Hadron-Hadron Scattering (11)
- Hadron-Hadron scattering (experiments) (11)
- LHC (9)
- Heavy-ion collision (6)
- ALICE experiment (4)
- Collective Flow (4)
- Jets (4)
- NASH (4)
- Quark-Gluon Plasma (4)
- ALICE (3)
- Ausdruck (3)
- Heavy Ions (3)
- Jets and Jet Substructure (3)
- NAFLD (3)
- inflammation (3)
- portal hypertension (3)
- pp collisions (3)
- Beauty production (2)
- Benjamin, Walter (2)
- Charm physics (2)
- Experimental nuclear physics (2)
- Experimental particle physics (2)
- Heavy Quark Production (2)
- Lepton-Nucleon Scattering (experiments) (2)
- Musik (2)
- Particle Correlations and Fluctuations (2)
- Particle and resonance production (2)
- Particle correlations and fluctuations (2)
- Pb–Pb collisions (2)
- QCD (2)
- Single electrons (2)
- cirrhosis (2)
- liver fibrosis (2)
- steatosis (2)
- 900 GeV (1)
- A survivor from Warsaw (1)
- ACLF (1)
- ADGRE1 (1)
- ALD (1)
- ALICE detector (1)
- Angiogenesis (1)
- Angiography (1)
- Anti-nuclei (1)
- Ausdruck, Begriff (1)
- Blood (1)
- Blood plasma (1)
- Boosted Jets (1)
- Centrality Class (1)
- Centrality Selection (1)
- Cirrhosis (1)
- Collagen (1)
- Collective Flow, (1)
- Comparison with QCD (1)
- Darwin, Charles (1)
- Das Passagen-Werk (1)
- Dramaturgie (1)
- EMR1 (1)
- Einkommenselastizität (1)
- Elastic scattering (1)
- Electron-pion identification (1)
- Electroweak interaction (1)
- Elementarschadenversicherung (1)
- Elliptic flow (1)
- Engel, Johann Jakob (1)
- Erinnerung (1)
- Evolution (1)
- Extracellular matrix (1)
- F4/80 (1)
- Femtoscopy (1)
- Fibre/foam sandwich radiator (1)
- Florida (1)
- Gedenken (1)
- Genetics (1)
- Geschichte 1700-1850 (1)
- Geschichte der deutschen Sprache (1)
- Ghana (1)
- Grimm, Jacob (1)
- HBT (1)
- Hadron production (1)
- Hadron-Hadron Scattering Heavy (1)
- Hadron-hadron interactions (1)
- Hadronization (1)
- Hagelversicherung (1)
- Hard Scattering (1)
- Hausratversicherung (1)
- Heavy Ion Experiment (1)
- Heavy flavor production (1)
- Heavy flavour production (1)
- Heavy ion collisions (1)
- Heavy ions (1)
- Heavy-flavour decay muons (1)
- Heavy-flavour production (1)
- Heavy-ion collisions (1)
- Hepatic stellate cell (1)
- Inclusive spectra (1)
- Intensity interferometry (1)
- Invariant Mass Distribution (1)
- Ionisation energy loss (1)
- Jet Physics (1)
- Jet Substructure (1)
- Judenvernichtung (1)
- Klang (1)
- Kommunikationsverhalten (1)
- Komposition <Musik> (1)
- Liver fibrosis (1)
- Material budget (1)
- Mechanisms of disease (1)
- Metalloproteinases (1)
- Mid-rapidity (1)
- Minimum Bias (1)
- Molecular biology (1)
- Molecular medicine (1)
- Monte Carlo (1)
- Multi-Parton Interactions (1)
- Multi-strange baryons (1)
- Multi-wire proportional drift chamber (1)
- Musikpsychologie (1)
- Musikästhetik (1)
- Nachfrage (1)
- Net-charge correlations (1)
- Net-charge fluctuations (1)
- Neural network (1)
- Nono, Luigi (1)
- Nuclear modification factor (1)
- Oper und Drama (1)
- PDE‐5‐inhibitor (1)
- PYTHIA (1)
- Paris (1)
- Particle and Resonance Production (1)
- Pb–Pb (1)
- Polarization (1)
- Portal hypertension (1)
- Portal veins (1)
- Preiselastizität (1)
- Production Cross Section (1)
- Properties of Hadrons (1)
- Proton–proton (1)
- Quark Deconfinement (1)
- Quark Gluon Plasma (1)
- Quark Production (1)
- Quark gluon plasma (1)
- Quarkonium (1)
- Rapidity Range (1)
- Relativistic heavy ion physics (1)
- Relativistic heavy-ion collisions (1)
- Resolution Parameter (1)
- Ricorda cosa ti hanno fatto in Auschwitz (1)
- Roux-en-Y gastric bypass (1)
- Sachversicherung (1)
- Schuluniform (1)
- Schätzung (1)
- Schönberg, Arnold (1)
- Single muons (1)
- Single-molecule biophysics (1)
- Sturmversicherung (1)
- Super-resolution microscopy (1)
- Systematic Uncertainty (1)
- TGF-β1 (1)
- TGR(mREN2)27 (1)
- TR (1)
- The expression of the emotions in man and animals (1)
- Time Projection Chamber (1)
- Tonsprache <Musik> (1)
- Tracking (1)
- Transition radiation detector (1)
- Transverse momentum (1)
- Trigger (1)
- Ueber musikalische Malerey (1)
- Vector Boson Production (1)
- Verbraucherverhalten (1)
- Versicherungswissenschaft (1)
- Wagner, Richard (1)
- Western diet (1)
- White blood cells (1)
- Wissenschaft (1)
- Xenon-based gas mixture (1)
- acute-on-chronic liver failure (ACLF) (1)
- acute‐on‐chronic liver failure (1)
- alcoholic fatty liver disease (1)
- animal model (1)
- bacterial translocation (1)
- caspase-1 (1)
- circulation (1)
- dE/dx (1)
- decompensated liver cirrhosis (1)
- detector (1)
- erectile dysfunction (1)
- experimental results (1)
- fibrosis (1)
- heavy ion experiments (1)
- hemodynamic (1)
- hepatic stellate cells (1)
- hepatocellular cancer (1)
- immunity (1)
- in vitro models (1)
- inflammasome (1)
- lipid droplets (1)
- lipidomics (1)
- liver steatosis (1)
- macrophage (1)
- metabolic liver disease (1)
- metabolomics (1)
- mini gastric bypass (1)
- monocyte chemotactic protein 1 (MCP-1) (1)
- mouse (1)
- non-alcoholic fatty liver disease (1)
- non‐selective beta‐blocker (1)
- one anastomosis gastric bypass (1)
- quark gluon plasma (1)
- renin-angiotensin system (1)
- spectra (1)
- transjugular intrahepatic portosystemic shunt (TIPS) (1)
- weight loss (1)
- Ästhetik (1)
- Überleben (1)
- √sN N = 2.76 TeV (1)
- fibrogenesis (1)
Institute
- Physik (1069)
- Frankfurt Institute for Advanced Studies (FIAS) (960)
- Informatik (921)
- Medizin (20)
- Biochemie und Chemie (3)
- Informatik und Mathematik (3)
- Ernst Strüngmann Institut (2)
- Hochschulrechenzentrum (2)
- MPI für Hirnforschung (2)
- Sonderforschungsbereiche / Forschungskollegs (2)
Inclusive transverse momentum spectra of primary charged particles in Pb–Pb collisions at √sNN=2.76 TeV have been measured by the ALICE Collaboration at the LHC. The data are presented for central and peripheral collisions, corresponding to 0–5% and 70–80% of the hadronic Pb–Pb cross section. The measured charged particle spectra in |η|<0.8 and 0.3<pT<20 GeV/c are compared to the expectation in pp collisions at the same sNN, scaled by the number of underlying nucleon–nucleon collisions. The comparison is expressed in terms of the nuclear modification factor RAA. The result indicates only weak medium effects (RAA≈0.7) in peripheral collisions. In central collisions, RAA reaches a minimum of about 0.14 at pT=6–7 GeV/c and increases significantly at larger pT. The measured suppression of high-pT particles is stronger than that observed at lower collision energies, indicating that a very dense medium is formed in central Pb–Pb collisions at the LHC.
The inclusive charged particle transverse momentum distribution is measured in proton–proton collisions at s=900 GeV at the LHC using the ALICE detector. The measurement is performed in the central pseudorapidity region (|η|<0.8) over the transverse momentum range 0.15<pT<10 GeV/c. The correlation between transverse momentum and particle multiplicity is also studied. Results are presented for inelastic (INEL) and non-single-diffractive (NSD) events. The average transverse momentum for |η|<0.8 is 〈pT〉INEL=0.483±0.001 (stat.)±0.007 (syst.) GeV/c and 〈pT〉NSD=0.489±0.001 (stat.)±0.007 (syst.) GeV/c, respectively. The data exhibit a slightly larger 〈pT〉 than measurements in wider pseudorapidity intervals. The results are compared to simulations with the Monte Carlo event generators PYTHIA and PHOJET.
Rapidity and transverse momentum dependence of inclusive J/ψ production in pp collisions at √s=7 TeV
(2011)
The ALICE experiment at the LHC has studied inclusive J/ψ production at central and forward rapidities in pp collisions at √s=7 TeV. In this Letter, we report on the first results obtained detecting the J/ψ through the dilepton decay into e+e− and μ+μ− pairs in the rapidity ranges |y|<0.9 and 2.5<y<4, respectively, and with acceptance down to zero pT. In the dielectron channel the analysis was carried out on a data sample corresponding to an integrated luminosity Lint=5.6 nb−1 and the number of signal events is NJ/ψ=352±32(stat.)±28(syst.); the corresponding figures in the dimuon channel are Lint=15.6 nb−1 and NJ/ψ=1924±77(stat.)±144(syst.). The measured production cross sections are σJ/ψ(|y|<0.9)=10.7±1.0(stat.)±1.6(syst.)−2.3+1.6(syst.pol.)μb and σJ/ψ(2.5<y<4)=6.31±0.25(stat.)±0.76(syst.)−1.96+0.95(syst.pol.)μb. The differential cross sections, in transverse momentum and rapidity, of the J/ψ were also measured.
Two-particle angular correlations between unidentified charged trigger and associated particles are measured by the ALICE detector in p–Pb collisions at a nucleon–nucleon centre-of-mass energy of 5.02 TeV. The transverse-momentum range 0.7 < pT,assoc < pT,trig < 5.0 GeV/c is examined, to include correlations induced by jets originating from low momentum-transfer scatterings (minijets). The correlations expressed as associated yield per trigger particle are obtained in the pseudorapidity range |η| < 0.9. The near-side long-range pseudorapidity correlations observed in high-multiplicity p–Pb collisions are subtracted from both near-side short-range and away-side correlations in order to remove the non-jet-like components. The yields in the jet-like peaks are found to be invariant with event multiplicity with the exception of events with low multiplicity. This invariance is consistent with the particles being produced via the incoherent fragmentation of multiple parton–parton scatterings, while the yield related to the previously observed ridge structures is not jet-related. The number of uncorrelated sources of particle production is found to increase linearly with multiplicity, suggesting no saturation of the number of multi-parton interactions even in the highest multiplicity p–Pb collisions. Further, the number scales only in the intermediate multiplicity region with the number of binary nucleon–nucleon collisions estimated with a Glauber Monte-Carlo simulation.
Freeze-out radii extracted from three-pion cumulants in pp, p–Pb and Pb–Pb collisions at the LHC
(2014)
In high-energy collisions, the spatio-temporal size of the particle production region can be measured using the Bose–Einstein correlations of identical bosons at low relative momentum. The source radii are typically extracted using two-pion correlations, and characterize the system at the last stage of interaction, called kinetic freeze-out. In low-multiplicity collisions, unlike in high-multiplicity collisions, two-pion correlations are substantially altered by background correlations, e.g. mini-jets. Such correlations can be suppressed using three-pion cumulant correlations. We present the first measurements of the size of the system at freeze-out extracted from three-pion cumulant correlations in pp, p–Pb and Pb–Pb collisions at the LHC with ALICE. At similar multiplicity, the invariant radii extracted in p–Pb collisions are found to be 5–15% larger than those in pp, while those in Pb–Pb are 35–55% larger than those in p–Pb. Our measurements disfavor models which incorporate substantially stronger collective expansion in p–Pb as compared to pp collisions at similar multiplicity.
We report on the measurement of the inclusive Υ (1S) production in Pb–Pb collisions at √sNN = 2.76 TeV carried out at forward rapidity (2.5 < y < 4) and down to zero transverse momentum using its μ+μ−decay channel with the ALICE detector at the Large Hadron Collider. A strong suppression of the inclusive Υ (1S) yield is observed with respect to pp collisions scaled by the number of independent nucleon–nucleon collisions. The nuclear modification factor, for events in the 0–90% centrality range, amounts to 0.30 ± 0.05(stat) ± 0.04(syst). The observed Υ (1S) suppression tends to increase with the centrality of the collision and seems more pronounced than in corresponding mid-rapidity measurements. Our results are compared with model calculations, which are found to underestimate the measured suppression and fail to reproduce its rapidity dependence.
Transverse momentum spectra of π±, K± and p(p¯) up to pT = 20 GeV/c at mid-rapidity in pp and Pb-Pb collisions at sNN−−−√= 2.76 TeV have been measured using the ALICE detector at the Large Hadron Collider. The proton-to-pion and the kaon-to-pion ratios both show a distinct peak at pT≈3GeV/c in central Pb-Pb collisions. Below the peak, pT < 3 GeV/c, both ratios are in good agreement with hydrodynamical calculations, suggesting that the peak itself is dominantly the result of radial flow rather than anomalous hadronization processes. For pT > 10 GeV/c particle ratios in pp and Pb-Pb collisions are in agreement and the nuclear modification factors for π±, K± and p(p¯) indicate that, within the systematic and statistical uncertainties, the suppression is the same. This suggests that the chemical composition of leading particles from jets in the medium is similar to that of vacuum jets.
The pT-differential inclusive production cross section of the prompt charm-strange meson Ds+ in the rapidity range |y|<0.5 was measured in proton–proton collisions at s=7 TeV at the LHC using the ALICE detector. The analysis was performed on a data sample of 2.98×108 events collected with a minimum-bias trigger. The corresponding integrated luminosity is Lint=4.8 nb−1. Reconstructing the decay Ds+→ϕπ+, with ϕ→K−K+, and its charge conjugate, about 480 Ds± mesons were counted, after selection cuts, in the transverse momentum range 2<pT<12 GeV/c. The results are compared with predictions from models based on perturbative QCD. The ratios of the cross sections of four D meson species (namely D0, D+, D⁎+ and Ds+) were determined both as a function of pT and integrated over pT after extrapolating to full pT range, together with the strangeness suppression factor in charm fragmentation. The obtained values are found to be compatible within uncertainties with those measured by other experiments in e+e−, ep and pp interactions at various centre-of-mass energies.
he first measurements of the invariant differential cross sections of inclusive π0 and η meson production at mid-rapidity in proton–proton collisions at s=0.9 TeV and s=7 TeV are reported. The π0 measurement covers the ranges 0.4<pT<7 GeV/c and 0.3<pT<25 GeV/c for these two energies, respectively. The production of η mesons was measured at s=√7 TeV in the range 0.4<pT<15 GeV/c. Next-to-Leading Order perturbative QCD calculations, which are consistent with the π0 spectrum at s=0.9 TeV, overestimate those of π0 and η mesons at s=√7 TeV, but agree with the measured η/π0 ratio at s=√7 TeV.
The ALICE Collaboration has measured inclusive J/ψ production in pp collisions at a center-of-mass energy √s=2.76 TeV at the LHC. The results presented in this Letter refer to the rapidity ranges |y|<0.9 and 2.5<y<4 and have been obtained by measuring the electron and muon pair decay channels, respectively. The integrated luminosities for the two channels are Linte=1.1 nb−1 and Lintμ=19.9 nb−1, and the corresponding signal statistics are NJ/ψe+e−=59±14 and NJ/ψμ+μ−=1364±53. We present dσJ/ψ/dy for the two rapidity regions under study and, for the forward-y range, d2σJ/ψ/dydpt in the transverse momentum domain 0<pt<8 GeV/c. The results are compared with previously published results at s=7 TeV and with theoretical calculations.