Monte Carlo Study on the Properties of Gluon and Quark Jets

  • The 3 jet events produced in e+e collisions at 91.2GeV have been studied using Monte Carlo method. After applying two angular cuts the three angles between the jets are used to identify the individual jet in 3 jet events. The energy distributions of the three jets, the mean particle multiplicities, mean transverse momenta of the three jets in equal energy bins and their distributions have been analyzed. Comparing with the corresponding results from the quark jets in 2 jet events, a simple method to select gluon and quark jets from 3 jet events is obtained. The properties of the gluon and quark jets being selected using the introduced method are in qualitative agreement with the expectations of perturbative QCD. The ratio of the mean multiplicity between quark and gluon jets, gluon/quark, has been calculated. The results, again, agree with the experimental results from SLD, OPAL, ALEPH, and DELPHI Collaborations, indicating that the method proposed to select gluon and quark jets from 3 jet events is reasonable.
  • 加载中
  • [1] . Hanson G et al.Phys.Rev.Lett.,1975,35:16092. Brandelik R et al(TASSO Coll.).Phys.Lett.,1979,B86:243—2493. Abreu Petal(DELPHI Coll.).Eur.Phys.J.,1998,C4:1—17 4. ZHANG KunShi,YIN JianWu,CHEN Gang et al.HEPNP ,2002,26:185(in Chinese) (张昆实,尹建武,陈刚等.高能物理与核物理,2002,26:185) 5. ALEPH Coll.Phys.Lett.,1996,B384:353—364;Acton P D et al(OPAL Coll.).Z .Phys.,1993,C58:387—403;1995,C68:1796. Abreu P et al(DELPHI Coll.).Phys.Lett.,1999,B449:383 7. DERRICK M et al(HRS Collaboration).Phys.Lett.,1985,B165:449 8. Buskulic Detal(ALEPH Collaboration).Phys.Lett.,1996,B383:353 9. YU Mei-Ling,LIU Lian-Shou.A Monte Carlo Studyon The Identification of Quark and Gluon J ets.In:Proceeding ofⅩⅩⅩⅠ International Symposiumon Multiparticle Dynamics.Datong,China. Sept.2001,eds.Bai Yuting,Yu Meiling and Wu Yuanfang(World Scientific);hepph/0112092
  • 加载中

Get Citation
ZHANG Kun-Shi, CHEN Gang, YU Mei-Ling and LIU Lian-Shou. Monte Carlo Study on the Properties of Gluon and Quark Jets[J]. Chinese Physics C, 2002, 26(11): 1110-1116.
ZHANG Kun-Shi, CHEN Gang, YU Mei-Ling and LIU Lian-Shou. Monte Carlo Study on the Properties of Gluon and Quark Jets[J]. Chinese Physics C, 2002, 26(11): 1110-1116. shu
Milestone
Received: 2001-12-24
Revised: 1900-01-01
Article Metric

Article Views(1217)
PDF Downloads(636)
Cited by(0)
Policy on re-use
To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

Monte Carlo Study on the Properties of Gluon and Quark Jets

    Corresponding author: LIU Lian-Shou,
  • Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China

Abstract: The 3 jet events produced in e+e collisions at 91.2GeV have been studied using Monte Carlo method. After applying two angular cuts the three angles between the jets are used to identify the individual jet in 3 jet events. The energy distributions of the three jets, the mean particle multiplicities, mean transverse momenta of the three jets in equal energy bins and their distributions have been analyzed. Comparing with the corresponding results from the quark jets in 2 jet events, a simple method to select gluon and quark jets from 3 jet events is obtained. The properties of the gluon and quark jets being selected using the introduced method are in qualitative agreement with the expectations of perturbative QCD. The ratio of the mean multiplicity between quark and gluon jets, gluon/quark, has been calculated. The results, again, agree with the experimental results from SLD, OPAL, ALEPH, and DELPHI Collaborations, indicating that the method proposed to select gluon and quark jets from 3 jet events is reasonable.

    HTML

Reference (1)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return