Please wait a minute...
Chinese Physics, 2007, Vol. 16(1): 58-61    DOI: 10.1088/1009-1963/16/1/010
NUCLEAR PHYSICS Prev   Next  

Study on `soft' and `hard' interactions in $\bar{\rm p}$p (pp) collisions using HIJING and PYTHIA

Zhang Yi-Fei(张一飞), Huang Sheng-Li(黄胜利), Zhang Zi-Ping(张子平), and Wu Jian(伍健)
Department of Modern Physics, University of Science and Technology of China, Hefei 230027, China
Abstract  This paper presents a study on `hard' and `soft' interactions in $\bar{\text{p}}$p (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 ($\langle$ pT$\rangle$) 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 $\langle$ pT$\rangle$ are different in `soft' and `hard' interactions.
Keywords:  mini-jet      HIJING      PYTHIA      soft gluon radiation  
Received:  24 September 2005      Revised:  23 June 2006      Accepted manuscript online: 
PACS:  13.85.Ni (Inclusive production with identified hadrons)  
  12.40.-y (Other models for strong interactions)  
  13.87.Ce (Production)  
  14.40.Aq  
Fund: Project supported by National Natural Science Foundation of China (Grant Nos 10275060 and 10475071).

Cite this article: 

Zhang Yi-Fei(张一飞), Huang Sheng-Li(黄胜利), Zhang Zi-Ping(张子平), and Wu Jian(伍健) Study on `soft' and `hard' interactions in $\bar{\rm p}$p (pp) collisions using HIJING and PYTHIA 2007 Chinese Physics 16 58

No related articles found!
No Suggested Reading articles found!