Charmonium in a hot medium: melting vs absorption

Autor:	Kopeliovich, B. Z., Potashnikova, I. K., Schmidt, Ivan, Siddikov, M.
Rok vydání:	2014
Předmět:	Nuclear Theory High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
DOI:	10.1016/j.nuclphysa.2014.08.043
Popis:	A charmonium produced in heavy ion collisions at RHIC and LHC propagates through a dense co-moving matter with a rather high relative momentum, =4-10GeV^2. In spite of Debye screening of the binding potential, the charmonium survives with a substantial probability, even if the c-cbar potential is completely screened in the hot environment. In addition, the color-exchange interaction with the medium is another important source of charmonium suppression. Attenuation in a hot medium caused by both effects is evaluated by means of the path integral technique, which requires ability of boosting the binding potential to a moving reference frame. This problem is solved in the approximation of small intrinsic velocities of the charmed quarks. Comment: 4 pages, 4 figures. A talk given by BZK at Quark Matter 2014, Darmstadt, May 19-24
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1407.8080 Zobrazit plný text záznamu View this record from Arxiv