Chinese Physics C > 2002, Vol. 26 > Issue(2): 158-163

Monte Carlo Study for the Dynamical Fluctuations Inside a Single Jet in 2-Jet Events

Institute of Particle Physics,Huazhong Normal University,Wuhan 430079,China1 Department of Physics,Jingzhou Teacher's College,Hubei 434104,China2 Department of Physics,Huanggang Teacher's College,Hubei 438000,China

Abstract
HTML
Reference
Related

PDF

Abstract：
The dynamical fluctuations inside a single jet in the 2 jet events produced in e ⁺e ^－collisions at 91.2GeV have been studied using Monte Carlo method. The results show that,the anisotropy of dynamical fluctuations inside a single jet changes remarkably with the variation of the cut parameter y _cut. A transition point (γ _pt=γ _φ≠γ _y) exists, where the dynamical fluctuations are anisotropic in the longitudinal transverse plan and isotropic in the transverse planes. It indicates that the y _cutcorresponding to the transition point is a physically reasonable cutting parameter for selecting jets and, meanwhile,the relative transverse momentum k _tat the transition point is the scale for the determination of physical jets. This conclusion is in good agreement with the experimental fact that the third jet (gluon jet) was historically first discovered in the energy region 17—30GeV in e ⁺e ^－collisions.

References

[1]

. LIU Lian-Shou, CHEN Gang, FU Jing-Hua, Phys. Rev., 2001, D63: 0540022. Brandt S, Peyrou Ch, Sosnowski R et al. Phys. Lett., 1964, D12: 573. Dokshitzer Yu L. J. Phys., 1991, G17: 1537 4. Lü Yan, YANG Li-Jian, YANG Li-Ping. HEP NP, 2001, 25(11): 1077(in Chinese)(吕, 杨利建, 杨丽平等. 高能物理与核物理, 2001, 25(11): 1077)5. Bialas A, Peschanski R. Nucl. Phys., 1986, B273: 7036. Ochs W. Phys. Lett., 1990, B347: 1017. WU Yuan-Fang, LIU Lian-Shou. Science in China, 1995, A38: 4358. Ochs W. Z. Phys., 1991, C50: 339 9. LIU Lian-Shou, ZHANG Yang, DENG Yue. Z. Phys., 1997, C73: 535 10. LIU Lian-Shou, WU Yuan-Fang. Multi particle Production in High Energy Collisions. Shanghai: Shanghai Scientific and Technical Publishers, 199811. Dokshitzer Yu L, Leder G D, Moretti S et al. JHEP, 1997, 08: 001

[1]	WEI Hui-Ling,CHEN Gang. Study on the Characters of Angular Distribution of Quark Jets and Gluon Jets. Chinese Physics C, 2007, 31(10): 907-912.
[2]	XU Ming-Mei. A Monte Carlo Study on Event-by-Event Transverse Momentum Fluctuation at RHIC. Chinese Physics C, 2005, 29(9): 892-895.
[3]	ZHANG Han-Zhong,WANG En-Ke. Suppression of Dihadron Production with Jet Quenching in A+A Collisions. Chinese Physics C, 2004, 28(9): 967-972.
[4]	CHEN Gang,LIU Lian-Shou. Study of the Hardness Property of Quark and Gluon Jets. Chinese Physics C, 2004, 28(5): 469-474.
[5]	SHAO Feng-Lan,XIE Qu-Bing,LI Shi-Yuan. Sensitive Observables for Color Connections in Three-Jet Events at Z⁰Pole. Chinese Physics C, 2003, 27(6): 479-483.
[6]	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.
[7]	SHAO Feng-Lan,XIE Qu-Bing,LI Shi-Yuan. Study of Colour Connections via Two-Jet Like Events in e⁺e^－Annihilation. Chinese Physics C, 2002, 26(11): 1103-1109.
[8]	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.
[9]	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.
[10]	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.
[11]	SHAO Ming,LIU Yan-Wen,ZHANG Zi-Ping,CHEN Hong-Fang. Study on Light Collection Uniformity of Long Lead Tungstate Crystal by Monte Carlo Method. Chinese Physics C, 2001, 25(1): 50-56.
[12]	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.
[13]	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.
[14]	Zhang Yang,Deng Yue,Liu Lianshou. On the Constraint of Transverse Momentum Conservation to Dynamic Fluctuations in High Energy Collisions. Chinese Physics C, 1997, 21(2): 130-137.
[15]	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.
[16]	Li Yunde,liu lianshou. Two-Jet Production via Resolved Photon Processes at HERA. Chinese Physics C, 1996, 20(7): 601-609.
[17]	LI Zhi-Bing,ZHONG Chao-Wu,CHEN Tian-Lun,HUANG Wu-Qun. MONTE CARLO RENORMALIZATION GROUP STUDY OF φ⁴MODEL. Chinese Physics C, 1988, 12(1): 23-27.
[18]	HUANG Wu-Qun,CHEN Tian-Lun,ZHONG Chao-Wu,LI Zhi-Bing. A MONTE CARLO RENORMALIZATION GROUP STUDY OF A 2-DIMENSIONAL TRIANGULAR LATTICE. Chinese Physics C, 1987, 11(1): 38-43.
[19]	HUANG Wu-Qun,CHEN Tian-Lun,SHEN Qin-Wan,ZHONG Chao-Wu. A MONTE CARLO RENORMALIZATION GROUP STUDY OF ISING MODEL ON RANDOM TRIANGLE LATTICE. Chinese Physics C, 1987, 11(4): 563-566.
[20]	LI Wen-Zhu,DONG Shao-Jing. QCD JET IN POLARIZED e⁺e^－ANNIHILATION. Chinese Physics C, 1984, 8(1): 52-58.

Access

Get Citation

ZHANG Kun-Shi, YIN Jian-Wu, CHEN Gang, LIU Chao and LIU Lian-Shou. Monte Carlo Study for the Dynamical Fluctuations Inside a Single Jet in 2-Jet Events[J]. Chinese Physics C, 2002, 26(2): 158-163.

ZHANG Kun-Shi, YIN Jian-Wu, CHEN Gang, LIU Chao and LIU Lian-Shou. Monte Carlo Study for the Dynamical Fluctuations Inside a Single Jet in 2-Jet Events[J]. Chinese Physics C, 2002, 26(2): 158-163. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2001-03-29
Revised: 1900-01-01

Article Metric

Article Views(4439)
PDF Downloads(612)
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

Monte Carlo Study for the Dynamical Fluctuations Inside a Single Jet in 2-Jet Events

Corresponding author:LIU Lian-Shou,

Institute of Particle Physics,Huazhong Normal University,Wuhan 430079,China1 Department of Physics,Jingzhou Teacher's College,Hubei 434104,China2 Department of Physics,Huanggang Teacher's College,Hubei 438000,China

Received Date:2001-03-29

Accepted Date:1900-01-01

Available Online:2002-02-05

Abstract:The dynamical fluctuations inside a single jet in the 2 jet events produced in e⁺e^－collisions at 91.2GeV have been studied using Monte Carlo method. The results show that,the anisotropy of dynamical fluctuations inside a single jet changes remarkably with the variation of the cut parameter y_cut. A transition point (γ_pt=γ_φ≠γ_y) exists, where the dynamical fluctuations are anisotropic in the longitudinal transverse plan and isotropic in the transverse planes. It indicates that the y_cutcorresponding to the transition point is a physically reasonable cutting parameter for selecting jets and, meanwhile,the relative transverse momentum k_tat the transition point is the scale for the determination of physical jets. This conclusion is in good agreement with the experimental fact that the third jet (gluon jet) was historically first discovered in the energy region 17—30GeV in e⁺e^－collisions.

HTML

Reference (1)

Monte Carlo Study for the Dynamical Fluctuations Inside a Single Jet in 2-Jet Events

Abstract：

References

Access

Article Metrics

Metrics

通讯作者:陈斌, bchen63@163.com

Email This Article