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Transverse momentum spectra and nuclear modification factors of charged particles in pp, p-Pb and Pb-Pb collisions at the LHC

, ; Acharya, S; Adolfsson, Jonatan LU ; Christiansen, Peter LU ; Ljunggren, Martin LU ; Oskarsson, Anders LU ; Richert, Tuva LU ; Silvermyr, David LU ; Stenlund, Evert LU and Vislavicius, Vytautas LU , et al. (2018) In Journal of High Energy Physics 2018(11).
Abstract
We report the measured transverse momentum (pT) spectra of primary charged particles from pp, p-Pb and Pb-Pb collisions at a center-of-mass energy sNN=5.02 TeV in the kinematic range of 0.15 < pT< 50 GeV/c and |η| < 0.8. A significant improvement of systematic uncertainties motivated the reanalysis of data in pp and Pb-Pb collisions at sNN=2.76 TeV, as well as in p-Pb collisions at sNN=5.02 TeV, which is also presented. Spectra from Pb-Pb collisions are presented in nine centrality intervals and are compared to a reference spectrum from pp collisions scaled by the number of binary nucleon-nucleon collisions. For central collisions, the pT spectra are suppressed by more than a factor of 7 around 6–7 GeV/c with a significant... (More)
We report the measured transverse momentum (pT) spectra of primary charged particles from pp, p-Pb and Pb-Pb collisions at a center-of-mass energy sNN=5.02 TeV in the kinematic range of 0.15 < pT< 50 GeV/c and |η| < 0.8. A significant improvement of systematic uncertainties motivated the reanalysis of data in pp and Pb-Pb collisions at sNN=2.76 TeV, as well as in p-Pb collisions at sNN=5.02 TeV, which is also presented. Spectra from Pb-Pb collisions are presented in nine centrality intervals and are compared to a reference spectrum from pp collisions scaled by the number of binary nucleon-nucleon collisions. For central collisions, the pT spectra are suppressed by more than a factor of 7 around 6–7 GeV/c with a significant reduction in suppression towards higher momenta up to 30 GeV/c. The nuclear modification factor RpPb, constructed from the pp and p-Pb spectra measured at the same collision energy, is consistent with unity above 8 GeV/c. While the spectra in both pp and Pb-Pb collisions are substantially harder at sNN=5.02 TeV compared to 2.76 TeV, the nuclear modification factors show no significant collision energy dependence. The obtained results should provide further constraints on the parton energy loss calculations to determine the transport properties of the hot and dense QCD matter.[Figure not available: see fulltext.]. © 2018, The Author(s). (Less)
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keywords
Heavy Ion Experiments, Heavy-ion collision
in
Journal of High Energy Physics
volume
2018
issue
11
publisher
Springer
external identifiers
  • scopus:85056258196
ISSN
1126-6708
DOI
10.1007/JHEP11(2018)013
language
English
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yes
id
7f0dcf22-2ad9-4b34-9f40-58cc114d0b5a
date added to LUP
2018-11-22 13:13:48
date last changed
2019-02-17 05:06:36
@article{7f0dcf22-2ad9-4b34-9f40-58cc114d0b5a,
  abstract     = {We report the measured transverse momentum (pT) spectra of primary charged particles from pp, p-Pb and Pb-Pb collisions at a center-of-mass energy sNN=5.02 TeV in the kinematic range of 0.15 &lt; pT&lt; 50 GeV/c and |η| &lt; 0.8. A significant improvement of systematic uncertainties motivated the reanalysis of data in pp and Pb-Pb collisions at sNN=2.76 TeV, as well as in p-Pb collisions at sNN=5.02 TeV, which is also presented. Spectra from Pb-Pb collisions are presented in nine centrality intervals and are compared to a reference spectrum from pp collisions scaled by the number of binary nucleon-nucleon collisions. For central collisions, the pT spectra are suppressed by more than a factor of 7 around 6–7 GeV/c with a significant reduction in suppression towards higher momenta up to 30 GeV/c. The nuclear modification factor RpPb, constructed from the pp and p-Pb spectra measured at the same collision energy, is consistent with unity above 8 GeV/c. While the spectra in both pp and Pb-Pb collisions are substantially harder at sNN=5.02 TeV compared to 2.76 TeV, the nuclear modification factors show no significant collision energy dependence. The obtained results should provide further constraints on the parton energy loss calculations to determine the transport properties of the hot and dense QCD matter.[Figure not available: see fulltext.]. © 2018, The Author(s).},
  articleno    = {13},
  author       = {,  and Acharya, S and Adolfsson, Jonatan and Christiansen, Peter and Ljunggren, Martin and Oskarsson, Anders and Richert, Tuva and Silvermyr, David and Stenlund, Evert and Vislavicius, Vytautas and Zou, S.},
  issn         = {1126-6708},
  keyword      = {Heavy Ion Experiments,Heavy-ion collision},
  language     = {eng},
  number       = {11},
  publisher    = {Springer},
  series       = {Journal of High Energy Physics},
  title        = {Transverse momentum spectra and nuclear modification factors of charged particles in pp, p-Pb and Pb-Pb collisions at the LHC},
  url          = {http://dx.doi.org/10.1007/JHEP11(2018)013},
  volume       = {2018},
  year         = {2018},
}