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Title: On the possibility of thermalization of heavy mesons in ultrarelativistic nuclear collisions

Abstract

The phenomenological analysis and interpretation of experimental data from RHIC and LHC on the production of J/ψ and D mesons in heavy-ion collisions are performed within the two-component HYDJET++ model including the thermal and hard mechanisms of hadron production. It is shown that the thermal freeze-out of charmed mesons at RHIC energies occurs earlier than the thermal freeze-out of light hadrons (assumingly, simultaneously with chemical freeze-out), which indicates that J/ψ and D mesons are not in kinetic equilibrium with the formed hadronic matter. At the same time, a significant part of D mesons at LHC energies are in kinetic equilibrium with the formed thermalized matter, but J/ψ mesons are still characterized by early freeze-out.

Authors:
;  [1];  [2]; ;  [1]
  1. Moscow State University, Skobeltsyn Institute of Nuclear Physics (Russian Federation)
  2. Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering (Czech Republic)
Publication Date:
OSTI Identifier:
22617072
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 124; Journal Issue: 2; Other Information: Copyright (c) 2017 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; BROOKHAVEN RHIC; CERN LHC; COLLISIONS; D MESONS; EQUILIBRIUM; FREEZING OUT; HEAVY ION REACTIONS; HEAVY IONS; PARTICLE PRODUCTION; RELATIVISTIC RANGE; THERMALIZATION

Citation Formats

Lokhtin, I. P., E-mail: Igor.Lokhtin@cern.ch, Belyaev, A. V., Ponimatkin, G., Pronina, E. Yu., and Eiyubova, G. Kh. On the possibility of thermalization of heavy mesons in ultrarelativistic nuclear collisions. United States: N. p., 2017. Web. doi:10.1134/S1063776117010149.
Lokhtin, I. P., E-mail: Igor.Lokhtin@cern.ch, Belyaev, A. V., Ponimatkin, G., Pronina, E. Yu., & Eiyubova, G. Kh. On the possibility of thermalization of heavy mesons in ultrarelativistic nuclear collisions. United States. doi:10.1134/S1063776117010149.
Lokhtin, I. P., E-mail: Igor.Lokhtin@cern.ch, Belyaev, A. V., Ponimatkin, G., Pronina, E. Yu., and Eiyubova, G. Kh. Wed . "On the possibility of thermalization of heavy mesons in ultrarelativistic nuclear collisions". United States. doi:10.1134/S1063776117010149.
@article{osti_22617072,
title = {On the possibility of thermalization of heavy mesons in ultrarelativistic nuclear collisions},
author = {Lokhtin, I. P., E-mail: Igor.Lokhtin@cern.ch and Belyaev, A. V. and Ponimatkin, G. and Pronina, E. Yu. and Eiyubova, G. Kh.},
abstractNote = {The phenomenological analysis and interpretation of experimental data from RHIC and LHC on the production of J/ψ and D mesons in heavy-ion collisions are performed within the two-component HYDJET++ model including the thermal and hard mechanisms of hadron production. It is shown that the thermal freeze-out of charmed mesons at RHIC energies occurs earlier than the thermal freeze-out of light hadrons (assumingly, simultaneously with chemical freeze-out), which indicates that J/ψ and D mesons are not in kinetic equilibrium with the formed hadronic matter. At the same time, a significant part of D mesons at LHC energies are in kinetic equilibrium with the formed thermalized matter, but J/ψ mesons are still characterized by early freeze-out.},
doi = {10.1134/S1063776117010149},
journal = {Journal of Experimental and Theoretical Physics},
number = 2,
volume = 124,
place = {United States},
year = {Wed Feb 15 00:00:00 EST 2017},
month = {Wed Feb 15 00:00:00 EST 2017}
}
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