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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. DOI: 10.11804/NuclPhysRev.31.02.142
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. DOI: 10.11804/NuclPhysRev.31.02.142
YU Gongming, LI Yunde. Photoproduction of Light Vector Meson in Heavy Ion Collisions[J]. Nuclear Physics Review, 2014, 31(2): 142-146. DOI: 10.11804/NuclPhysRev.31.02.142
Citation: YU Gongming, LI Yunde. Photoproduction of Light Vector Meson in Heavy Ion Collisions[J]. Nuclear Physics Review, 2014, 31(2): 142-146. DOI: 10.11804/NuclPhysRev.31.02.142

重离子碰撞中的轻矢量介子光生过程(英文)

Photoproduction of Light Vector Meson in Heavy Ion Collisions

  • 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pT >2.5 GeV Au-Au 碰撞和pT >3 GeV Pb-Pb 碰撞,轻矢量介子光生过程的贡献是明显的。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.

     

    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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