J/Psi mass shift in nuclear matter

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Data

2011-02-28

Autores

Krein, Gastão Inácio [UNESP]
Thomas, A. W.
Tsushima, K.

Título da Revista

ISSN da Revista

Título de Volume

Editor

Elsevier B.V.

Resumo

The J/Psi mass shift in cold nuclear matter is computed using an effective Lagrangian approach. The mass shift is computed by evaluating D and D* meson loop contributions to the J/Psi self-energy employing medium-modified meson masses. The modification of the D and D* masses in nuclear matter is obtained using the quark-meson coupling model. The loop integrals are regularized with dipole form factors and the sensitivity of the results to the values of form-factor cutoff masses is investigated. The J/Psi mass shift arising from the modification of the D and D* loops at normal nuclear matter density is found to range from -16 MeV to -24 MeV under a wide variation of values of the cutoff masses. Experimental perspectives for the formation of a bound state of J/Psi to a nucleus are investigated. (c) 2011 Elsevier B.V. All rights reserved.

Descrição

Palavras-chave

Mesons in nuclear matter, Mesic nuclei, Nuclear-bound quarkonium, Charmed mesons, Quark-meson coupling model

Como citar

Physics Letters B. Amsterdam: Elsevier B.V., v. 697, n. 2, p. 136-141, 2011.