Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at √sNN = 5.02 TeV
ALICE Collaboration. (2017). Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at √sNN = 5.02 TeV. Physics Letters B, 772, 567-577. https://doi.org/10.1016/j.physletb.2017.07.017
Published inPhysics Letters B
© 2017 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license. Funded by SCOAP3.
We present the charged-particle pseudorapidity density in Pb–Pb collisions at √sNN = 5.02 TeV in centrality classes measured by ALICE. The measurement covers a wide pseudorapidity range from −3.5 to 5, which is sufficient for reliable estimates of the total number of charged particles produced in the collisions. For the most central (0–5%) collisions we find 21 400 ± 1 300, while for the most peripheral (80–90%) we find 230 ± 38. This corresponds to an increase of (27 ± 4)% over the results at √sNN = 2.76 TeV previously reported by ALICE. The energy dependence of the total number of charged particles produced in heavy-ion collisions is found to obey a modified power-law like behaviour. The chargedparticle pseudorapidity density of the most central collisions is compared to model calculations — none of which fully describes the measured distribution. We also present an estimate of the rapidity density of charged particles. The width of that distribution is found to exhibit a remarkable proportionality to the beam rapidity, independent of the collision energy from the top SPS to LHC energies. ...
Publication in research information system
MetadataShow full item record
Except where otherwise noted, this item's license is described as © 2017 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license. Funded by SCOAP3.
Showing items with similar title or keywords.
Longitudinal asymmetry and its effect on pseudorapidity distributions in Pb–Pb collisions at √sNN = 2.76 TeV ALICE Collaboration (Elsevier B.V., 2018)First results on the longitudinal asymmetry and its effect on the pseudorapidity distributions in Pb–Pb collisions at = 2.76 TeV at the Large Hadron Collider are obtained with the ALICE detector. The longitudinal asymmetry ...
Centrality and pseudorapidity dependence of the charged-particle multiplicity density in Xe–Xe collisions at √sNN = 5.44 TeV ALICE Collaboration; Chang, BeomSu; Kim, Dong Jo; Parkkila, Jasper; Rak, Jan; Räsänen, Sami; Slupecki, Maciej; Snellman, Tomas; Trzaska, Wladyslaw; Vargyas, Márton; Viinikainen, Jussi (Elsevier B.V., 2019)In this Letter, the ALICE Collaboration presents the first measurements of the charged-particle multiplicity density, dNch/dη, and total charged-particle multiplicity, Ntot ch , in Xe–Xe collisions at a centre-of-mass energy ...
Centrality Dependence of the Charged-Particle Multiplicity Density at Midrapidity in Pb-Pb Collisions at √sNN = 5.02 TeV ALICE Collaboration (American Physical Society, 2016)The pseudorapidity density of charged particles, dNch=dη, at midrapidity in Pb-Pb collisions has been measured at a center-of-mass energy per nucleon pair of √sNN=5.02 TeV. For the 5% most central collisions, we measure ...
Pseudorapidity distributions of charged particles as a function of mid- and forward rapidity multiplicities in pp collisions at √s = 5.02, 7 and 13 TeV ALICE Collaboration (Springer, 2021)The multiplicity dependence of the pseudorapidity density of charged particles in proton–proton (pp) collisions at centre-of-mass energies √s = 5.02, 7 and 13 TeV measured by ALICE is reported. The analysis relies on track ...
Charged-particle multiplicity distributions over a wide pseudorapidity range in proton-proton collisions at s√= 0.9, 7, and 8 TeV ALICE Collaboration (Springer, 2017)We present the charged-particle multiplicity distributions over a wide pseudorapidity range (−3.4<η<5.0) for pp collisions at s√=0.9,7, and 8 TeV at the LHC. Results are based on information from the Silicon Pixel Detector ...