On the possibility of thermalization of heavy mesons in ultrarelativistic nuclear collisions
- Moscow State University, Skobeltsyn Institute of Nuclear Physics (Russian Federation)
- Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering (Czech Republic)
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.
- OSTI ID:
- 22617072
- Journal Information:
- Journal of Experimental and Theoretical Physics, Vol. 124, Issue 2; Other Information: Copyright (c) 2017 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
- Country of Publication:
- United States
- Language:
- English
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