Refine
Year of publication
Language
- English (702)
Has Fulltext
- yes (702)
Is part of the Bibliography
- no (702)
Keywords
- Hadron-Hadron Scattering (7)
- Heavy Ion Experiments (5)
- Collective Flow (4)
- Charm physics (2)
- Heavy Ions (2)
- Heavy Quark Production (2)
- Jets (2)
- Particle Correlations and Fluctuations (2)
- QCD (2)
- Centrality Class (1)
- Centrality Selection (1)
- Collective Flow, (1)
- Electron-pion identification (1)
- Fibre/foam sandwich radiator (1)
- Hard Scattering (1)
- Heavy ions (1)
- Heavy-ion collision (1)
- Invariant Mass Distribution (1)
- Ionisation energy loss (1)
- Material budget (1)
- Minimum Bias (1)
- Monte Carlo (1)
- Multi-Parton Interactions (1)
- Multi-wire proportional drift chamber (1)
- Neural network (1)
- Production Cross Section (1)
- Quark Deconfinement (1)
- Quark Gluon Plasma (1)
- Quark gluon plasma (1)
- Rapidity Range (1)
- Relativistic heavy ion physics (1)
- Resolution Parameter (1)
- Systematic Uncertainty (1)
- TR (1)
- Time Projection Chamber (1)
- Tracking (1)
- Transition radiation detector (1)
- Trigger (1)
- Xenon-based gas mixture (1)
- dE/dx (1)
- detector (1)
- experimental results (1)
Institute
- Physik (702)
- Frankfurt Institute for Advanced Studies (FIAS) (701)
- Informatik (701)
- Hochschulrechenzentrum (2)
The pseudorapidity density of charged particles (dNch/dη) at mid-rapidity in Pb-Pb collisions has been measured at a center-of-mass energy per nucleon pair of sNN−−−√ = 5.02 TeV. It increases with centrality and reaches a value of 1943±54 in |η|<0.5 for the 5% most central collisions. A rise in dNch/dη as a function of sNN−−−√ for the most central collisions is observed, steeper than that observed in proton-proton collisions and following the trend established by measurements at lower energy. The centrality dependence of dNch/dη as a function of the average number of participant nucleons, ⟨Npart⟩, calculated in a Glauber model, is compared with the previous measurement at lower energy. A constant factor of about 1.2 describes the increase in 2⟨Npart⟩⟨dNch/dη⟩ from sNN−−−√ = 2.76 TeV to sNN−−−√ = 5.02 TeV for all centrality intervals, within the measured range of 0-80% centrality. The results are also compared to models based on different mechanisms for particle production in nuclear collisions.
The pseudorapidity density of charged particles (dNch/dη) at mid-rapidity in Pb-Pb collisions has been measured at a center-of-mass energy per nucleon pair of sNN−−−√ = 5.02 TeV. It increases with centrality and reaches a value of 1943±54 in |η|<0.5 for the 5% most central collisions. A rise in dNch/dη as a function of sNN−−−√ for the most central collisions is observed, steeper than that observed in proton-proton collisions and following the trend established by measurements at lower energy. The centrality dependence of dNch/dη as a function of the average number of participant nucleons, ⟨Npart⟩, calculated in a Glauber model, is compared with the previous measurement at lower energy. A constant factor of about 1.2 describes the increase in 2⟨Npart⟩⟨dNch/dη⟩ from sNN−−−√ = 2.76 TeV to sNN−−−√ = 5.02 TeV for all centrality intervals, within the measured range of 0-80% centrality. The results are also compared to models based on different mechanisms for particle production in nuclear collisions.