D-sJ(2317) meson production in ultrarelativistic heavy ion collisions RID A-2398-2009
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Date
2007
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Abstract
Production of D-sJ(2317) mesons in relativistic heavy ion collisions at the BNL Relativistic Heavy Ion Collider is studied. Using the quark coalescence model, we first determine the initial number of D-sJ(2317) mesons produced during hadronization of created quark-gluon plasma. The predicted D-sJ(2317) abundance depends sensitively on the quark structure of the D-sJ(2317) meson. An order-of-magnitude larger yield is obtained for a conventional two-quark than for an exotic four-quark D-sJ(2317) meson. To include the hadronic effect on the D-sJ(2317) meson yield requires the absorption cross sections of the D-sJ(2317) meson by pions, rho mesons, anti-kaons, and vector anti-kaons, which we have evaluated in a phenomenological model. Taking into consideration the absorption and production of D-sJ(2317) mesons during the hadronic stage of heavy ion collisions via a kinetic model, we find that the final yield of D-sJ(2317) mesons remains sensitive to its initial number produced from the quark-gluon plasma, providing thus the possibility of studying the quark structure of the D-sJ(2317) meson and its production mechanism in relativistic heavy ion collisions.
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Journals published by the American Physical Society can be found at http://publish.aps.org/
Keywords
QCD SUM-RULES, MULTI-QUARK HADRONS, EQUATION-OF-STATE, CHARM PRODUCTION, AU COLLISIONS, MODEL, COALESCENCE, HADRONIZATION, CASCADE, Physics
Citation
L. W. Chen, Che Ming Ko, W. Liu and M. Nielsen. Phys.Rev.C 76 014906 2007. "Copyright (2007) by the American Physical Society."