Flavor-dependent photoproduction in heavyion collisions  

作　　者：Zhuoxuan Xie Ruilin Han 

机构地区：[1]Department of Physics,University of Rochester,NY 14627,United States of America [2]Tianjin Xinhua High School,Tianjin 300350,China

出　　处：《Communications in Theoretical Physics》2021年第12期105-110,共6页理论物理通讯（英文版）

摘　　要：Strong electromagnetic fields produced in the non-central heavy-ion collisions can induce vector meson photoproduction.In this paper,we study the photoproduction J/ψandφmesons in the relativistic heavy-ion collision from ultra-peripheral nuclear collisions to peripheral hadronic heavy ion collisions.And then include both initial hadronic production and thermal production in quark-gluon plasma(QGP).We find,for the charm anti-charm bound state J/ψ,the photoproduced J/ψs are mainly in the very low momentum region and clearly exceed the hadronic production.However,considering the thermal production of strange quark anti-quark pairs in QGP produced in relativistic heavy-ion collisions,the photoproducedφis usually smaller than the thermal production and only evident at very peripheral collisions as even their photoproduction is much larger than J/ψ.

关 键 词：relativistic heavy ion collisions PHOTOPRODUCTION quark gluon plasma charmonium production 

分 类 号：O571.6[理学—粒子物理与原子核物理]