| Full text | |
| Author(s): |
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 Opportunities: | Scholarships in Brazil - Post-Doctoral |