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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Understanding the p/pi ratio at LHC due to QCD mass spectrum

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Author(s):
Noronha-Hostler, Jacquelyn [1] ; Greiner, Carsten [2]
Total Authors: 2
Affiliation:
[1] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo - Brazil
[2] Goethe Univ, Inst Theoret Phys, Frankfurt - Germany
Total Affiliations: 2
Document type: Journal article
Source: Nuclear Physics A; v. 931, p. 1108-1113, NOV 2014.
Web of Science Citations: 17
Abstract

Thermal fits have consistently reproduced the experimental particle yields of heavy ion collisions, however, the proton to pion ratio from ALICE Pb + Pb root S-NN = 2.76 TeV is over-predicted by thermal models - known as the p/pi puzzle. Here we test the relevance of the extended mass spectrum, i.e., include Hagedorn states (resonances that follow an exponential mass spectrum and have very short life times) on the p/pi puzzle. We find that the extended mass spectrum is able to reproduce particle ratios at both RHIC and the LHC as well as is able to match the lower p/pi ratio at the LHC through dynamical chemical equilibration. (C) 2014 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 11/08361-7 - Equilibrium and Transport Properties of the Hot and Dense Matter Created in High Energy Nuclear Collisions
Grantee:Jacquelyn Michelle Noronha-Hostler
Support type: Scholarships in Brazil - Post-Doctorate