Influence of System Size Dependence of Energy Loss on Hadron Spectra Suppression

WANG Xiao-Dong; ZHANG Han-Zhong; WANG En-Ke

Chinese Physics C> 2007, Vol. 31> Issue(6) : 553-557

Influence of System Size Dependence of Energy Loss on Hadron Spectra Suppression

Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China

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Abstract：
Based on parton model in QCD, at the leading-order approximation we studied the π⁰ spectra and nuclear modification factor R_AA in Au+Au and Cu+Cu collisions with different centralities. Because of parton jet energy loss in heavy ion collision, large transverse momentum hadrons spectra are suppressed as compared to p+p collisions at the same energy. It is shown that the suppression has strong dependence on the system size which determines the amount of the jet energy loss. The bigger the system is, the larger parton energy loss is. It results in the much more suppression of the spectra and also the much less R_AA.

References

[1]

. Friedman B, McLerran L. Phys. Rev., 1978, D17: 1109-11222. McLerran L. Rev. Mod. Phys., 1986, 58: 1021-10643. Adler S S et al. Phys. Rev. Lett., 2002, 89(202301): 1-64. Adler S S et al. Phys. Rev. Lett., 2003, 91(072301): 1-65. Adcox K et al. Phys. Rev. Lett., 2003, 88(022301): 1-6;Phys Rev. Lett., 2003, 91(241803): 1-66. Gyulassy M. Prog. Theor. Phys., 2004, 111: 841-8557. WANG X N, Gyulassy M. Phys. Rev. Lett., 1992, 68:1480-14838. WANG X N. Phys. Rep., 1997, 280: 287-3719. WANG X N, HUANG Z, Sarcevic I. Phys. Rev. Lett., 1996,77: 231-23410. Baier R, Dokshitzer Y L, Muller A H et al. Nucl. Phys.,1997, B484: 265-282; Baier R, Dokshitzer Y L, Muller AH et al. Nucl. Phys., 1998, B531: 403-42511. Gyulassy M, Levai P, Vitev I. Phys. Rev, Lett., 2000, 85:5535; Nucl. Phys., 2001, B594: 37112. WANG En-Ke, WANG Xin-Nian. Phys. Rev. Lett., 2001,87(142301): 1-413. WANG En-Ke, WANG Xin-Nian. Phys. Rev. Lett., 2002,89(162301): 1-414. Eskola K J, WANG X N. Int. J. Mod. Phys., 1995, A10:3071-308015. WANG X N, Gyulassy M. Phys. Rev., 1991, D44: 3501-351616. LI Shi-Yuan, WANG X N. Phys. Lett., 2002, B527: 85-9117. WANG Xin-Nian. Phys. Lett., 2004, B595: 165-17018. ZHANG Han-Zhong, WANG En-Ke. HEP NP, 2004,28(9): 967-972(in Chinese0(张汉中,王恩科.高能物理与核物理,2004, 28(9): 967-972)19. LAI H L et al. Eur. Phys. J, 2000, C12: 375-38220. Kniehl B A, Kramer G, Potter B. Nucl. Phys., 2000, B582:514-53621. Back B B et al. Phys. Rev., 2004, C70(021902): 1-522. Slefan Bathe U C Riverside for the PHENIX CollaborationDNP/JPS 200, Moui, September 2023. WANG E, WANG X N. Phys. Rev., 2001, C64(034901):1-8

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[4]	DUAN Chun-Gui , WANG Shuo-He , SHEN Peng-Nian , LI Guang-Lie . Suppression of Nuclear Drell-Yan Ratios Due to Energy Loss Effect. Chinese Physics C, 2006, 30(8): 714-717.
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[6]	Sun Baoxi , Li Lei , Ning Pingzhi , Zhao Enguang . Effect of △-Isobar in Strange Hadronic Matter. Chinese Physics C, 1999, 23(12): 1203-1208.
[7]	Sa Benhao , Tai An , Wang Hui , Liu Fenghe . J/ψ Suppression in a Hadron and String Cascade Model. Chinese Physics C, 1999, 23(5): 489-495.
[8]	Liu Xiaofei , Li Jiarong . Effect of the Internal Line Particle's Finite Width on the Energy Loss of a Fast Moving Parton Penetrating Through QGP. Chinese Physics C, 1998, 22(10): 896-902.
[9]	Dong Yubing . Heavy Quark Effective Theory and Study of Heavy Hadron Spectra. Chinese Physics C, 1995, 19(8): 748-756.
[10]	Song Guang , Sa Benhao , Wang Zhongqi , Lu Zhongdao , Zhang Xiaoze , Zheng Yuming . Strong Stopping of Nuclear System at AGS Energy. Chinese Physics C, 1995, 19(2): 172-177.
[11]	Jing Cailiu , Ding Linkai . A Dependence of Longitudinal Momenta of Secondary Particles on Multiplicity in Hadronic Interactions. Chinese Physics C, 1994, 18(10): 865-869.
[12]	LAN Qi-Kai , LIU Lian-Shou . Energy Correlation of the Variation of Average Transverse Momentum with Respect to Multiplicity in Hadron-Hadron Collisions and the Three Fire Ball Model. Chinese Physics C, 1993, 17(10): 934-940.
[13]	WU Yuan-Fang , LIU Lian-Shou . On the Moment-Order,Multiplicity and Transverse-Momentum Dependences of Intermittency in Hadron-Hadron Collisions. Chinese Physics C, 1991, 15(9): 822-826.
[14]	XU Min , ZENG Xiang-Tao , HUANG Kai-Ping , ZHANG Tian-Bao . EFFECT OF THE ENERGY LOSS PROCESS ON THE ANNIHILATION OF ORTHOPOSITRONIUM IN SILICA AEROGEL. Chinese Physics C, 1988, 12(4): 447-454.
[15]	HU Lian , GUO Shuo-Hong . A VARIATIONAL RESEARCH FOR HADRON SPECTRUM. Chinese Physics C, 1986, 10(3): 288-296.
[16]	LI He-Nian , YUAN Yu-Kui , QIN Ke-Yu , ZHU Qing-Qi , WU Shi-Pei , LI Yan-Guo , ZHENG Rong-Ting , HUO An-Xiang . CHARGED HADRONIC MOMENTUM SPECTRA IN THE RANGE (5—50)GeV/c AT MOUNTAIN ALTITUDE. Chinese Physics C, 1985, 9(3): 268-272.
[17]	ZHU Qing-Qi , WU Shi-Pei . SIMULATION CALCULATION FOR DETECTION EFFICIENCY IN THE MEASUREMENT OF COSMIC RAY HADRON SPECTRA. Chinese Physics C, 1985, 9(3): 263-267.
[18]	YIN PENG-CHENG , ZHOU GU-SHENG , WANG JIA-ZHU , WANG ZI . GLUE BAG MODEL AND MASS SPECTRA OF HADRONS. Chinese Physics C, 1981, 5(4): 417-428.
[19]	Chen Yong-shou , Zheng Yu-ming , Lu Zhao-qi . THE AFFECTION OF SIZE CHANGE OF α PARTICLE ON THE α-α SCATTERING. Chinese Physics C, 1980, 4(2): 203-209.
[20]	ZHU WEI , ZHANG MIN-SHENG , LU JI-ZONG , FENG CHENG-TIAN , CHU JUN-HAO . A φ⁴-TYPE BAG MODEL OF HADRONS——THE “RUBBER BAG”MODEL Ⅱ.THE MASS SPECTRA OF HADRONS. Chinese Physics C, 1979, 3(3): 266-271.

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WANG Xiao-Dong, ZHANG Han-Zhong and WANG En-Ke. Influence of System Size Dependence of Energy Loss on Hadron Spectra Suppression[J]. Chinese Physics C, 2007, 31(6): 553-557.

WANG Xiao-Dong, ZHANG Han-Zhong and WANG En-Ke. Influence of System Size Dependence of Energy Loss on Hadron Spectra Suppression[J]. Chinese Physics C, 2007, 31(6): 553-557. shu

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Received: 2006-09-30
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Influence of System Size Dependence of Energy Loss on Hadron Spectra Suppression

Corresponding author: WANG Xiao-Dong,

Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China

Received Date: 2006-09-30

Accepted Date: 1900-01-01

Available Online: 2007-06-05

Abstract: Based on parton model in QCD, at the leading-order approximation we studied the π⁰ spectra and nuclear modification factor R_AA in Au+Au and Cu+Cu collisions with different centralities. Because of parton jet energy loss in heavy ion collision, large transverse momentum hadrons spectra are suppressed as compared to p+p collisions at the same energy. It is shown that the suppression has strong dependence on the system size which determines the amount of the jet energy loss. The bigger the system is, the larger parton energy loss is. It results in the much more suppression of the spectra and also the much less R_AA.

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Influence of System Size Dependence of Energy Loss on Hadron Spectra Suppression

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