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Universal scaling dependence of QCD energy loss from data-driven studies

Christiansen, Peter LU ; Tywoniuk, K. and Vislavicius, Vytautas LU (2014) In Physical Review C (Nuclear Physics) 89(3).
Abstract
In this paper we study the energy loss of jets in the Quark Gluon Plasma via the nuclear modification factor R-AA for unidentified particles at high p(T) (greater than or similar to 10 GeV/c) in and out of the reaction plane of the collision. We argue that at such a high p(T) there are no genuine flow effects and, assuming that the energy loss is only sensitive to initial characteristics such as the density and geometry, find that R-AA depends linearly on the (rms) length extracted from Glauber simulations. Furthermore, we observe that for different centrality classes the density dependence of the energy loss enters as the square root of the charged-particle multiplicity normalized to the initial overlap area. The energy loss extracted for... (More)
In this paper we study the energy loss of jets in the Quark Gluon Plasma via the nuclear modification factor R-AA for unidentified particles at high p(T) (greater than or similar to 10 GeV/c) in and out of the reaction plane of the collision. We argue that at such a high p(T) there are no genuine flow effects and, assuming that the energy loss is only sensitive to initial characteristics such as the density and geometry, find that R-AA depends linearly on the (rms) length extracted from Glauber simulations. Furthermore, we observe that for different centrality classes the density dependence of the energy loss enters as the square root of the charged-particle multiplicity normalized to the initial overlap area. The energy loss extracted for BNL Relativistic Heavy Ion Collider and CERN Large Hadron Collider data from the R-AA is found to exhibit a universal behavior. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C (Nuclear Physics)
volume
89
issue
3
publisher
American Physical Society
external identifiers
  • wos:000334125900007
  • scopus:84898809545
ISSN
0556-2813
DOI
10.1103/PhysRevC.89.034912
language
English
LU publication?
yes
id
083421d0-fe75-4a4b-8b40-3d3c14d70c9e (old id 4439758)
date added to LUP
2014-05-20 10:54:09
date last changed
2017-01-01 05:50:59
@article{083421d0-fe75-4a4b-8b40-3d3c14d70c9e,
  abstract     = {In this paper we study the energy loss of jets in the Quark Gluon Plasma via the nuclear modification factor R-AA for unidentified particles at high p(T) (greater than or similar to 10 GeV/c) in and out of the reaction plane of the collision. We argue that at such a high p(T) there are no genuine flow effects and, assuming that the energy loss is only sensitive to initial characteristics such as the density and geometry, find that R-AA depends linearly on the (rms) length extracted from Glauber simulations. Furthermore, we observe that for different centrality classes the density dependence of the energy loss enters as the square root of the charged-particle multiplicity normalized to the initial overlap area. The energy loss extracted for BNL Relativistic Heavy Ion Collider and CERN Large Hadron Collider data from the R-AA is found to exhibit a universal behavior.},
  articleno    = {034912},
  author       = {Christiansen, Peter and Tywoniuk, K. and Vislavicius, Vytautas},
  issn         = {0556-2813},
  language     = {eng},
  number       = {3},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Universal scaling dependence of QCD energy loss from data-driven studies},
  url          = {http://dx.doi.org/10.1103/PhysRevC.89.034912},
  volume       = {89},
  year         = {2014},
}