夸克-胶子等离子体中的双轻子产率The Dilepton Production Rate in the Quark-gluon Plasma
王栋;李剑波;
摘要(Abstract)：
为了更好地从双轻子信息研究夸克-胶子等离子体,本文利用正反夸克湮灭产生双轻子的反应截面,考虑到夸克-胶子等离子体的动量分布满足玻尔兹曼分布,在假设夸克和轻子的质量为0的情况下,推出了等离子体中双轻子的产率.结果表明双轻子的产率与等离子体温度的4次方成正比.
关键词(KeyWords)： 夸克-胶子等离子体;双轻子;产率
基金项目(Foundation):
作者(Author): 王栋;李剑波;
Email:
参考文献(References)：
- [1]Chakrabarty S,Alam Je,Srivastava D K,et al.High-energy photons from expanding quark-gluon plasma and hot hadronic matter[J].Phys Rev D,1992,46(9):3802-3806.
- [2]Qin Guangyou,Abhijit Majumder,Charles Gale.Photon production from charge-asymmetric hot and dense matter[J].Phys RevC,2007,75(6):4909.
- [3]K.Kajantie,Kapusta J,McLerran L,et al.Dilepton emission and the QCD phase transition in ultrarelativistic nuclear collisions[J].Phys Rev D,1986,34(9):2746-2754.
- [4]Ruuskanen P V.Electromagnetic probes of quark-gluon plasma in relativistic heavy ion collisions[J].Nucl Phys A,1992,544(1/2):169-182.
- [5]Chaudhuri A K.J/ψproduction in Au+Au and Cu+Cu collisions at√s=200 GeV and the threshold model[J].Phys Rev C,2007,75(4):4902-4908.
- [6]R.D.Field.Applications of Perturbative QCD[M].New Jersey:Addison-Wesley Publishing Company,1989.
- [7]黄卓然.高能重离子碰撞导论[M].张卫宁,译.哈尔滨:哈尔滨工业大学出版社,2002.
- [8]董季兰.实用数学公式手册[M].石家庄:河北科学技术出版社,1988.
文章评论(Comment)：
|
||||||||||||||||||
|
||||||||||||||||||