| Study on‘soft＇ and ‘hard＇ interactions in ^-pp （pp） collisions using HIJING and PYTHIA |
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| 引用本文： | 张一飞,黄胜利,张子平,伍健.Study on‘soft＇ and ‘hard＇ interactions in ^-pp （pp） collisions using HIJING and PYTHIA[J].中国物理 B,2007,16(1):58-61. |
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| 作者姓名： | 张一飞 黄胜利 张子平 伍健 |
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| 作者单位： | Department of Modern Physics, University of Science and Technology of China, Hefei 230027, China;Department of Modern Physics, University of Science and Technology of China, Hefei 230027, China;Department of Modern Physics, University of Science and Technology of China, Hefei 230027, China;Department of Modern Physics, University of Science and Technology of China, Hefei 230027, China |
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| 基金项目： | Project supported by National Natural
Science Foundation of China (Grant Nos 10275060 and 10475071). |
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| 摘 要： | This paper presents a study on ＇hard＇ and ＇soft＇ interactions in ^-pp （pp） collisions using a phenomenological model of HIJING, the jet-cone reconstruction method is employed to select the ＇hard＇ and ＇soft＇ event sub-samples from minimum bias events. It is found that the HIJING model can reproduce the energy scaling behaviour of mean transverse momentum （〈PT〉） distributions of charged hadrons versus multiplicity （Nch） in ＇soft＇ events. From the PYTHIA simulation comparing with the HIJING model, the enhancement of the kaon and proton yields from ＇hard＇ interactions comparing with ＇soft＇ interactions is observed to be due to the mini-jets effect. These mechanisms responsible for the increase of charged hadron＇s （PT） are different in ＇soft＇ and ＇hard＇ interactions.
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| 关 键 词： | 电子碰撞 现象学模型 交互作用 粒子物理学 |
| 收稿时间： | 2005-09-24 |
| 修稿时间： | 2005-09-242006-06-23 |
Study on `soft' and `hard' interactions in pp (pp) collisions using HIJING and PYTHIA |
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| Zhang Yi-Fei,Huang Sheng-Li,Zhang Zi-Ping and Wu Jian.Study on `soft'' and `hard'' interactions in pp (pp) collisions using HIJING and PYTHIA[J].Chinese Physics B,2007,16(1):58-61. |
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| Authors: | Zhang Yi-Fei Huang Sheng-Li Zhang Zi-Ping and Wu Jian |
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| Institution: | Department of Modern Physics, University of Science and Technology of China, Hefei 230027, China |
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| Abstract: | This paper presents a study on `hard' and `soft' interactions in
pp (pp) collisions using a phenomenological model of HIJING, the
jet-cone reconstruction method is employed to select the `hard' and
`soft' event sub-samples from minimum bias events. It is found that
the HIJING model can reproduce the energy scaling behaviour of mean
transverse momentum (< pT>) distributions of charged
hadrons versus multiplicity (Nch) in `soft' events. From the
PYTHIA simulation comparing with the HIJING model, the enhancement of
the kaon and proton yields from `hard' interactions comparing with
`soft' interactions is observed to be due to the mini-jets effect.
These mechanisms responsible for the increase of charged hadron's
T> are different in `soft' and `hard' interactions. |
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| Keywords: | mini-jet HIJING PYTHIA soft gluon radiation |
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