Search for Tetraquarks in Relativistic Heavy-Ion Collisions  

作　　者：MA Zhong-Biao GAO Chong-Shou 

机构地区：[1]Department of Physics, University of Science and Technology Beijing, Beijing 100083, China [2]Institute of High Energy Physics, the Chiness Academy of Sciences, Beijing 100039, China [3]Department of Physics, Peking University, Beijing 100871, China

出　　处：《Communications in Theoretical Physics》2006年第6X期1023-1026,共4页理论物理通讯（英文版）

基　　金：The project partly supported by National Natural Science Foundation of China under Grant Nos. 10225525 and 10055003 and the CAS Knowledge Innovation Project under Grant No. KJCX2-SW-N02.The authors would like to thank B.S. Zou for helpful discussions and valuable remarks.

摘　　要：Tetraquarks can be produced in relativistic heavy-ion collision. The yield of this kind of tetraquarks can increase significantly soon as the formation of QGP after the collision. If there is no phase transition after collision, the upper bound of the production of this four-quark states can be estimated from the free hadronlc gas model for nuclear matter. The relative yield ratio of tetraquark cs^-s^-s to Ω is less than 0.0164.

关 键 词：TETRAQUARK hadronic gas QGP 

分 类 号：O572.33[理学—粒子物理与原子核物理] O571.6[理学—物理]