| p-A碰撞中核效应的空间依赖性 |
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| 引用本文： | 刘植凤.p-A碰撞中核效应的空间依赖性[J].洛阳师范学院学报,2007,26(2):32-36. |
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| 作者姓名： | 刘植凤 |
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| 作者单位： | 石家庄经济学院地动所,河北石家庄,050000 |
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| 摘 要： | 本文通过p-A碰撞的核Drell-Yan过程研究了核遮蔽效应及其空间相关性,计算了能量为800GeV的质子打击Au核的Drell-Yan过程与p-p碰撞Drell-Yan过程的微分截面比。发现在考虑部分子分布的空间依赖性后,核Drell-Yan的截面会有显著变化。计算结果与未来精确测量p-Au碰撞核Drell-Yan过程的实验数据比较,就能定量的验证部分子分布函数的空间依赖性。
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| 关 键 词： | 核遮蔽效应因子 核Drell-Yan过程 碰撞参数 部分子分布函数 部分子分布的空间依赖性 |
| 文章编号： | 24414085 |
| 修稿时间： | 04 21 2006 12:00AM |
The Nuclear Shadowing Effect Spatial Dependence in p-A Collision |
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| LIU Zhi-feng.The Nuclear Shadowing Effect Spatial Dependence in p-A Collision[J].Journal of Luoyang Teachers College,2007,26(2):32-36. |
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| Authors: | LIU Zhi-feng |
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| Institution: | Earthquake Research Institute, Shijiazhuang Economic University, Shijiazhuang 050000, China |
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| Abstract: | In this paper the nuclear shadowing effect and its position dependence is studied by the p-A Drell-Yan process.Drell-Yan cross-section ratios for an 800GeV proton beam incident on p and Au is calculated.It is found that,considering the spatial dependence of parton distribution functions,the cross-section of nuclear Drell-Yan process changes significantly.Comparing this result with the future precise data measured in Drell-Yan process,the spatial dependent parton distribution functions can be examined. |
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| Keywords: | nuclear shadowing effect parameter nuclear Drell-Yan process collision parameter parton distribution functions spatial dependence of parton distribution functions |
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