| ee0A GeV S+Au反应中光子产生的低横动量增强 |
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| 引用本文： | 王辉,萨本豪,台安.ee0A GeV S+Au反应中光子产生的低横动量增强[J].中国物理 C,2000,24(3):220-224. |
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| 作者姓名： | 王辉 萨本豪 台安 |
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| 作者单位： | [1]中国原子能科学研究院，北京102413 [2]中国科学院高能物理研究所，北京100039 |
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| 基金项目： | 国家自然科学基金，核工业基金 |
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| 摘 要： | 用建立在LUND弦模型特别是PYTHIA事件产生器基础上的描写极端相对论性核一核碰撞的强子和弦级联模型—JPCIAE研究了入射能量为200A GeV的S+ Au中心碰撞中光子产生.模型同时考虑了部分子QCD散射过程、强子末态相互作用以及强子衰变等光子产生反应道并作了协调处理.JPCIAE模型计算结果很好再现了WA93实验数据所呈现的低横动量增强效应.
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| 关 键 词： | 光子产生的低横动量增强 JPCIAE模型 部分子QCD散射 强子 相互作用 强子衰变 |
| 收稿时间： | 1999-2-8 |
Low PT Enhancement of Photon Production in 200 A GeV S An Collisions |
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| WANG Hui,SA BenHao.Low PT Enhancement of Photon Production in 200 A GeV S An Collisions[J].High Energy Physics and Nuclear Physics,2000,24(3):220-224. |
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| Authors: | WANG Hui SA BenHao |
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| Abstract: | A hadron and string cascade model, JPCIAE, which is based on LUND string model, PYTHIA event generator especially, is used to study the photon production of 200 A GeV S An central collisions. The model takes into account photon produced from the partonic QCD scattering processe, the final-state hadronic interaction, and hadronic decay and deals with them consistently. The results of JPCIAE model reproduce successfully the WA93 data of low P_T enhancement. We have compared the contributions from different decay channels and discussed the role played by rescattering. |
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| Keywords: | low PT enhancement of photon production JPCIAE model QCD hard scattering hadronic interaction hadronic decay |
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