DsJ(2317) meson production in ultrarelativistic heavy ion collisions

被引：32

作者：

Chen, L. W. ^{[1
]}

Ko, C. M.

Liu, W.

Nielsen, M.

机构：

[1] Shanghai Jiao Tong Univ, Inst Theoret Phys, Shanghai 200240, Peoples R China

[2] Texas A&M Univ, Inst Cyclotron, College Stn, TX 77843 USA

[3] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA

[4] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil

来源：

PHYSICAL REVIEW C | 2007年 / 76卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevC.76.014906

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

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.

引用

页数：11

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