DsJ(2317) meson production in ultrarelativistic heavy ion collisions Academic Article uri icon

abstract

  • Production of DsJ(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 DsJ(2317) mesons produced during hadronization of created quark-gluon plasma. The predicted DsJ(2317) abundance depends sensitively on the quark structure of the DsJ(2317) meson. An order-of-magnitude larger yield is obtained for a conventional two-quark than for an exotic four-quark DsJ(2317) meson. To include the hadronic effect on the DsJ(2317) meson yield requires the absorption cross sections of the DsJ(2317) meson by pions, ρ mesons, anti-kaons, and vector anti-kaons, which we have evaluated in a phenomenological model. Taking into consideration the absorption and production of DsJ(2317) mesons during the hadronic stage of heavy ion collisions via a kinetic model, we find that the final yield of DsJ(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 DsJ(2317) meson and its production mechanism in relativistic heavy ion collisions. © 2007 The American Physical Society.

author list (cited authors)

  • Chen, L. W., Ko, C. M., Liu, W., & Nielsen, M.

citation count

  • 26

publication date

  • July 2007