Core-corona interplay in Pb-Pb collisions at sNN=2.76 TeV

Core-corona interplay in Pb-Pb collisions at sNN=2.76 TeV A simple approach based on the separation of wounded nucleons in an A-A collision in two categories, those suffering single collisions (corona) and the rest (core), estimated within a Glauber Monte Carlo model, explains the centrality dependence of the light flavor hadron production in Pb-Pb collisions at sNN=2.76TeV. The core contribution does not include any dependence of any process on the fireball shape as a function of the impact parameter. Therefore, the ratios of the pT distributions to the one corresponding to the minimum-bias pp collisions at the same energy—each of them normalized to the corresponding charged particle density—the ⟨pT⟩ and transverse energy per unit of rapidity are reproduced less accurately by such an approach. The results show that, at energies available at the CERN Large Hadron Collider, the corona contribution still plays an important role, and it has to be considered in order to evidence the centrality dependence of different observables related to the core properties and dynamics. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review C American Physical Society (APS)

Core-corona interplay in Pb-Pb collisions at sNN=2.76 TeV

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Core-corona interplay in Pb-Pb collisions at sNN=2.76 TeV

Abstract

A simple approach based on the separation of wounded nucleons in an A-A collision in two categories, those suffering single collisions (corona) and the rest (core), estimated within a Glauber Monte Carlo model, explains the centrality dependence of the light flavor hadron production in Pb-Pb collisions at sNN=2.76TeV. The core contribution does not include any dependence of any process on the fireball shape as a function of the impact parameter. Therefore, the ratios of the pT distributions to the one corresponding to the minimum-bias pp collisions at the same energy—each of them normalized to the corresponding charged particle density—the ⟨pT⟩ and transverse energy per unit of rapidity are reproduced less accurately by such an approach. The results show that, at energies available at the CERN Large Hadron Collider, the corona contribution still plays an important role, and it has to be considered in order to evidence the centrality dependence of different observables related to the core properties and dynamics.
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Publisher
American Physical Society (APS)
Copyright
Copyright © ©2017 American Physical Society
ISSN
0556-2813
eISSN
1089-490X
D.O.I.
10.1103/PhysRevC.96.014908
Publisher site
See Article on Publisher Site

Abstract

A simple approach based on the separation of wounded nucleons in an A-A collision in two categories, those suffering single collisions (corona) and the rest (core), estimated within a Glauber Monte Carlo model, explains the centrality dependence of the light flavor hadron production in Pb-Pb collisions at sNN=2.76TeV. The core contribution does not include any dependence of any process on the fireball shape as a function of the impact parameter. Therefore, the ratios of the pT distributions to the one corresponding to the minimum-bias pp collisions at the same energy—each of them normalized to the corresponding charged particle density—the ⟨pT⟩ and transverse energy per unit of rapidity are reproduced less accurately by such an approach. The results show that, at energies available at the CERN Large Hadron Collider, the corona contribution still plays an important role, and it has to be considered in order to evidence the centrality dependence of different observables related to the core properties and dynamics.

Journal

Physical Review CAmerican Physical Society (APS)

Published: Jul 13, 2017

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