Study on the Characters of Angular Distribution of Quark Jets and Gluon Jets

WEI Hui-Ling; CHEN Gang

Chinese Physics C> 2007, Vol. 31> Issue(10) : 907-912

Study on the Characters of Angular Distribution of Quark Jets and Gluon Jets

WEI Hui-Ling ,
CHEN Gang ^,

Department of Physics, China University of Geosciences, Wuhan 430074, China

Abstract
HTML
Reference
Related

PDF

Abstract：
The 3-jet events are produced by Monte Carlo simulation Jetset7.4 in e⁺e^－ collisions at s=91.2GeV. After introducing the cone angle of jets, we carefully studied the characters of the angular distributions of quark jets and gluon jets with different flavors. It turns out that the ranges of angular distributions of gluon jets are obviously wider than that of quark jets at the same energies. The average cone angles of gluon jets are much larger than that of quark jets for the same charged particle multiplicity or the same transverse momentum. There are linear relations in the distributions of the average cone angles of jets as functions of the charged multiplicity and the transverse momentum. The angular distribution properties of gluon jets produced by quarks with different flavors are the same, while there are obvious differences among the distributions of cone angles for quark jets of different flavors.

References

[1]

. Hanson G, Abrams G S, Boyarski A M et al. Phys. Rev.Lett., 1975, 35: 1609-16122. Brandelik R et al. Phys. Lett., 1979, B86: 2433. Dokshitzer Yu L, Troyan S I. In: Proc. of the XIX WinterSchool of the LNPI: Vol.1. Leningrad, 1984, 144; AzimovYa I, Dokshitaer Yu L, Khosze SI. Z. Phys., 1985, C27:65-724. Alexander G et al. (OPAL Collab.). Phys. Lett., 1991,B265: 4625. Acton P D et al. (OPAL Collab.). Z. Phys., 1993, C58: 3876. Akers R et al. (OPAL Collab.). Z. Phys., 1995, C68: 1797. Alexander G et al. (OPAL Collab.). Z. Phys., 1996, C69:5438. Abreu P et al. (DELPHI Collab.). Z. Phys., 1996, C70:1799. Buskulic D et al. (ALEPH Collab.). Phys. Lett., 1995,B346: 38910. Buskulic D et al. (ALEPH Collab.). CERN-PPE/95-18411. Knowles I G et al. Physics at LEP 2, Vol. 2, CERN 96-01.eds. Altarelli G and Zwirner F; Gary J W. Proceedings ofthe XXV International Symposium on Multiparticle Dy-namics. Stará Lesnaá, Slovakia, September, 1995, 12-1612. Catani S et al. Phys. Lett., 1991, B269: 432-43813. Derrick M et al. Phys. Lett., 1985, B165: 44914. YU M L, LIU L S. Chin. Phys. Lett., 2002, 19: 64715. CHEN G, LIU L S. Chin. Phys. Lett., 2005, 22: 840

[1]	ZHANG Kun-Shi , LIU Lian-Shou . On the Identification of Quark and Gluon Jets Using Artificial Neural Network Method. Chinese Physics C, 2004, 28(11): 1141-1145.
[2]	CHEN Gang , LIU Lian-Shou . Study of the Hardness Property of Quark and Gluon Jets. Chinese Physics C, 2004, 28(5): 469-474.
[3]	LIN Xiao-Yan , LIU Lian-Shou . Scale for the Production of Jets in High Energy e⁺e^－ Collisions. Chinese Physics C, 2003, 27(1): 7-11.
[4]	SHAO Feng-Lan , XIE Qu-Bing , LI Shi-Yuan . Sensitive Observables for Color Connections in Three-Jet Events at Z⁰ Pole. Chinese Physics C, 2003, 27(6): 479-483.
[5]	XING Xiu-Wen , ZHONG Wei-Li , LIU Lian-Shou . A Monte Carlo Study of the Fractal Property inside Jets Produced in High Energy e⁺e^－ Collisions. Chinese Physics C, 2003, 27(2): 95-98.
[6]	YIN Jian-Wu , LIU Feng . On the Dynamical Fluctuations in the Production and Evolusion of Jets in High Energy Hadron-Hadron Collisions. Chinese Physics C, 2002, 26(5): 477-483.
[7]	YIN Jian-Wu , LIU Feng , LIU Lian-Shou . Self-Affine Analysis for the Dynamical Fluctuations inside Jets Produced in High Energy Hadron-Hadron Collisions. Chinese Physics C, 2002, 26(2): 152-157.
[8]	ZHANG Kun-Shi , YIN Jian-Wu , CHEN Gang , LIU Chao , LIU Lian-Shou . Monte Carlo Study for the Dynamical Fluctuations Inside a Single Jet in 2-Jet Events. Chinese Physics C, 2002, 26(2): 158-163.
[9]	ZHANG Kun-Shi , CHEN Gang , YU Mei-Ling , LIU Lian-Shou . Monte Carlo Study on the Properties of Gluon and Quark Jets. Chinese Physics C, 2002, 26(11): 1110-1116.
[10]	GUO Yuan-Yuan , ZENG Jie , YIN Jian-Wu . Monte Carlo Study of the Dynamical Fluctuation Properties inside Jets in High Energy Hadron-Hadron Collisions. Chinese Physics C, 2001, 25(11): 1084-1088.
[11]	LV Yan , YANG Li-Jian , YANG Li-Ping , MAO Tian . Monte Carlo Study of the Properties of Jets in High Energy Hadron-Hadron Collisions. Chinese Physics C, 2001, 25(11): 1077-1083.
[12]	Liu Ming , Liu Feng(Y) , Liu Feng , Liu Lianshou . On the Methods of Jet Identification in High Energy Collsions. Chinese Physics C, 1997, 21(2): 138-145.
[13]	Li Yunde , liu lianshou . Two-Jet Production via Resolved Photon Processes at HERA. Chinese Physics C, 1996, 20(7): 601-609.
[14]	Liu Ximing . Difference of Particle Multiplicities Between Quark Jets of Different Flavors in e⁺e^－ Annihilation. Chinese Physics C, 1994, 18(9): 829-835.
[15]	LAI Xiao-Ping , XIE Qu-Bing , FANG Hai-Ping . SEMI-INCL USIVE DISTRIBUTIONS AND RAPIDITY DEPENDENCE OF MULTIPLICITY DISTRIBUTIONS IN e⁺e^－ ANNIHILATION INTO TWO JETS. Chinese Physics C, 1990, 14(1): 24-30.
[16]	FANG Hai-Ping , XIE Qu-Bing , LAI Xiao-Ping . RAPIDITY DISTRIBUTION AND BARYON-ANTIBARYON CORRELATIONS IN e⁺e^－→TWO JET EVENTS. Chinese Physics C, 1989, 13(6): 518-525.
[17]	XIE Qu-Bing , LIU Xi-Ming . QUARK PRODUCTION RULE IN e⁺e^－→TWO JETS EVENTS AT HIGH ENERGY. Chinese Physics C, 1987, 11(6): 834-839.
[18]	LI Wen-Zhu , DONG Shao-Jing . QCD JET IN POLARIZED e⁺e^－ ANNIHILATION. Chinese Physics C, 1984, 8(1): 52-58.
[19]	DING LIN-KAI , ZHU QING-QI , GUO KE-ZHUN . CLUSTER PHENOMENA OBSERVED IN EMULSION CHAMBER EXPERIMENTS IN ENERGY REGION OF 10¹⁵—10¹⁶ eV AND HADRON JETS WITH LARGE TRANSVERSE MOMENTA. Chinese Physics C, 1982, 6(6): 657-664.
[20]	CHANG CHAO-XI . ON STRUCTURE OF MULTIPARTICLES IN QUARK JETS FOR e⁺e^- COLLIDING. Chinese Physics C, 1982, 6(1): 123-128.

Access

Get Citation

WEI Hui-Ling and CHEN Gang. Study on the Characters of Angular Distribution of Quark Jets and Gluon Jets[J]. Chinese Physics C, 2007, 31(10): 907-912.

WEI Hui-Ling and CHEN Gang. Study on the Characters of Angular Distribution of Quark Jets and Gluon Jets[J]. Chinese Physics C, 2007, 31(10): 907-912. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2006-12-28
Revised: 2007-01-04

Article Metric

Article Views(2809)
PDF Downloads(620)
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

Study on the Characters of Angular Distribution of Quark Jets and Gluon Jets

Corresponding author: CHEN Gang,

Department of Physics, China University of Geosciences, Wuhan 430074, China

Received Date: 2006-12-28

Accepted Date: 2007-01-04

Available Online: 2007-10-05

Abstract: The 3-jet events are produced by Monte Carlo simulation Jetset7.4 in e⁺e^－ collisions at s=91.2GeV. After introducing the cone angle of jets, we carefully studied the characters of the angular distributions of quark jets and gluon jets with different flavors. It turns out that the ranges of angular distributions of gluon jets are obviously wider than that of quark jets at the same energies. The average cone angles of gluon jets are much larger than that of quark jets for the same charged particle multiplicity or the same transverse momentum. There are linear relations in the distributions of the average cone angles of jets as functions of the charged multiplicity and the transverse momentum. The angular distribution properties of gluon jets produced by quarks with different flavors are the same, while there are obvious differences among the distributions of cone angles for quark jets of different flavors.

HTML

Reference (1)

Study on the Characters of Angular Distribution of Quark Jets and Gluon Jets

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article