Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at sNN=5.02 TeV
(2017) In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 772. p.567-577- Abstract
- 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 21400±1300, 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 charged-particle pseudorapidity density of the most central... (More)
- 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 21400±1300, 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 charged-particle 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. © 2017 The Author(s) (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/58bdea9a-69ff-4809-868d-c2e62af471ae
- author
- Adam, J.
; Adamova, D.
; Aggarwal, M.M
; Aglieri Rinella, G
; Agnello, M.
; Agrawal, N
; Christiansen, Peter
LU
; Ljunggren, Martin
LU
; Oskarsson, Anders
LU
; Richert, Tuva
LU
; Silvermyr, David
LU
; Stenlund, Evert
LU
and Vislavicius, Vytautas
LU
(Less) - organization
- publishing date
- 2017
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
- volume
- 772
- pages
- 11 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:85025159471
- wos:000411369700081
- ISSN
- 0370-2693
- DOI
- 10.1016/j.physletb.2017.07.017
- language
- English
- LU publication?
- yes
- additional info
- Export Date: 31 July 2017
- id
- 58bdea9a-69ff-4809-868d-c2e62af471ae
- date added to LUP
- 2017-07-31 08:34:11
- date last changed
- 2023-07-25 13:38:30
@article{58bdea9a-69ff-4809-868d-c2e62af471ae,
abstract = {{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 21400±1300, 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 charged-particle 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. © 2017 The Author(s)}},
author = {{Adam, J. and Adamova, D. and Aggarwal, M.M and Aglieri Rinella, G and Agnello, M. and Agrawal, N and Christiansen, Peter and Ljunggren, Martin and Oskarsson, Anders and Richert, Tuva and Silvermyr, David and Stenlund, Evert and Vislavicius, Vytautas}},
issn = {{0370-2693}},
language = {{eng}},
pages = {{567--577}},
publisher = {{Elsevier}},
series = {{Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}},
title = {{Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at sNN=5.02 TeV}},
url = {{http://dx.doi.org/10.1016/j.physletb.2017.07.017}},
doi = {{10.1016/j.physletb.2017.07.017}},
volume = {{772}},
year = {{2017}},
}