| 重离子碰撞中的轻矢量介子光生过程(英文) |
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| 引用本文： | 余功明,李云德.重离子碰撞中的轻矢量介子光生过程(英文)[J].原子核物理评论,2014,31(2):142-146. |
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| 作者姓名： | 余功明 李云德 |
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| 作者单位： | 云南大学物理系,昆明 650091 |
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| 基金项目： | National Natural Science Foundation of China(10665003,11065010)~~ |
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| 摘 要： | 计算了相对论重离子碰撞中轻矢量介子(ρ,ω和φ)的光生过程。基于窄-宽近似,严格推导了相对论重离子碰撞中ρ,ω和φ半弹性和非弹性光生过程的遍举和单举横截面。从数值结果可以看出对于p-p碰撞,光生过程的贡献是不重要的,但是对于pT2.5 GeV Au-Au碰撞和pT3 GeV Pb-Pb碰撞,轻矢量介子光生过程的贡献是明显的。
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| 关 键 词： | 光生过程 轻矢量介子 相对论重离子碰撞 |
| 收稿时间： | 1900-01-01 |
Photoproduction of Light Vector Meson in Heavy Ion Collisions |
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| Institution: | Department of Physics, Yunnan University, Kunming 650091, China |
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| Abstract: | We calculate the photoproduction processes of light vector meson(ρ, ω and Φ) in heavy ion collisions. Based on the narrow-width approximation, we rigorously derive the exclusive and inclusive cross sections of ρ, ω and Φ produced by the semielastic and inelastic photoproduction processes in relativistic heavy ion collisions. The numerical results indicate that contribution of photoproduction processes of light vector meson is not prominent for p-p collisions, but thecontribution becomes evident for pT >2.5 GeV in Au-Au collisions and pT >3 GeV in Pb-Pb collisions. |
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