| Energy Loss of Fast Quarks in Nuclear Drell-Yan Dimuon Production |
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| 作者姓名： | 段春贵 崔树稳 沈彭年 厉光烈 |
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| 作者单位： | [1]DepartmentofPhysics,HebeiNormalUniversity,Shijiazhuang050016 [2]DepartmentofPhysics,CangzhouTeachers＇College,Cangzhou061000 [3]InstituteofHighEnergyPhysics,ChineseacademyofSciences,Beijing100039 [4]CCAST（WorldLaboratory）,POBox8730,Beijing100080 |
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| 摘 要： | The energy loss effect in nuclear matter, which is another nuclear effect apart from the nuclear effects on the patton distribution as in the deep inelastic scattering process, can be measured best by the nuclear dependence of the high energy nuclear Drell-Yan process. By means of the quark energy loss parametrization given in literature and the nuclear patton distribution extracted only with lepton-nucleus deep inelastic scattering experimental data, measured Drell-Yan production cross sections are analysed for 800-GeV protons incident on a variety of nuclear targets from FNAL E866. The average energy loss of quarks are given by fitting the Fe/Be and W/Be Drell-Yan cross section ratios versus the incident patton momentum fraction.
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| 关 键 词： | 能量损耗效应 快夸克 Drell-Yan双μ子生产 非弹性散射 重离子碰撞实验 |
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