对光滑粒子流体动力学模型π源的视像分析

原子核物理评论 , 2009, 26(4): 300-303.

对光滑粒子流体动力学模型π源的视像分析

任延宇 ^1, , 高长晨 ^2, , 杨志韬 ^3, , 张卫宁 ^4,

1.哈尔滨工业大学物理系,黑龙江哈尔滨,150006

2.哈尔滨工业大学物理系,黑龙江哈尔滨,150006

3.哈尔滨工业大学物理系,黑龙江哈尔滨,150006

4.哈尔滨工业大学物理系,黑龙江哈尔滨,150006;大连理工大学物理与光电工程学院,辽宁大连,116024;兰州重离子加速器国家实验室原子核理论中心,甘肃兰州730000

基金项目: 国家自然科学基金(10775024)

关键词：光滑粒子流体动力学模型 , 非均匀颗粒源 , 视像分析

Imaging Analysis of Pion Sources in Smoothed Particle Hydrodynamic Model

Keywords： NeXSPheRIO model , inhomogeneous granular source , imaging analysis

利用光滑粒子流体动力学模型,研究了(√SNN)=200 GeV Au+Au碰撞产生的π介子发射源的视像结果.碰撞后的演化图显示,系统在演化过程中呈现出明显的非均匀性颗粒集团分布.这种发射源所得到的视像分析结果表明,即使在相同的碰撞参数下,不同事件的相对发射源函数也会存在差异.这种差异在大碰撞参数下表现得尤为明显.

We investigate the imaging of pion-emitting source produced in (√SNN)=200 GeV Au+Au colli-sions with NeXSPheRIO model.The pictures of the system evolution show that there is obvious inhomo-geneous structure of granular lumps.The results of imaging analysis indicate that the relative source func-tions for the various events of the granular sources are different even though the events are with the same impact parameter.This difference is more evident for the events with large impact parameter.

参考文献

[1]	Adler C,Ahammed Z,Allgower C,et al(STAR Collabora-tion).Phys Rev Lett,2002,89:132301.
[2]	Adler C,Ahallltned Z,Allgower C,et al(STAR Collabora-tion).Phys Rev Lett,2003,90:032301.
[3]	Adler S S,Afanasiev S,AidMa C,et al(PHENIX Collabora-tion).Phys Rev Lett,2001,91:182301.
[4]	Adans J,Ahammed z,Aggarwal M M,et al(STAR Collabo-ration).Phys Rev Lett,2004,92:052302.
[5]	Adler C,Ahammed Z,Allgower C,et al(STAR Collabora-tion).Phys Rev Lett,2001,87:082301.
[6]	Adcox K,Adler S S,Ajitanand N N,et al(PHENIX Collabo-ration).Phys Rev Lett,2002,88:192302.
[7]	Adler S S,Afanasiev S,Aidala C,et al(PHENIX Collabora-tion).Phys Rev Lett,2004,93:152302.
[8]	Adams J,Aggarwal M M,Ahammed Z,et al(STAR Collabo-ration).Phys Rev,2005,C71:044906.
[9]	Zhang W N,Efaaf M J,Wong C Y.Phys Rev,2004,C70:024903.
[10]	Zhang W N,Li S X,Wong C Y,et al.Phys Rev,2005,C71:064908; Wong C Y,Zhang W N.Phys Rev,2004,C70:064904.
[11]	Zhang W N,Li S X,Wong C Y,et al.Phys Rev,2005,C71:064908; Wong C Y,Zhang W N.Phys Rev,2004,C70:064904.
[12]	Zhang W N,Ren Y Y,Wong C Y.Phys Rev,2006,C74:024908.
[13]	Ren Y Y,Zhang W N,Liu J L.Phys Lett,2008,B669:317.
[14]	Yang Z T,Zhang W N,Huo Lei,et al.J Phys,2009,G86:015113.
[15]	Torfiefi G,Tomasik B,Mishustin I.Phys Rev,2008,C77:034903.
[16]	Witten E.Phys Rev,1984,D30:272.
[17]	Gyulassy M,McLerran L.Nucl Phys,2005,A750:30.
[18]	Aguiar C E,Kodama T,Osada T,et al.J Phys,2001,G27:75.
[19]	Gazdzicki M,Gorenstein M I,Grassi F,et al.arXiv:hep-ph/0309192.
[20]	Sokolowski Jr O,Grassi F,Hama Y,et al.Phya Rev Lett,2004,93:182301.
[21]	Grassi F,Hama Y,Kodama T,et al.J Phys,2005,G31:1041.
[22]	Andrade R,Grassi F,Hanna Y.Phys Rev Lett,2006,97:202302.
[23]	Drescher H J,Liu F M,Ostapchenko S,et al.Phy Rev,2002,C65:054902.
[24]	[233 Werner K,Drescher H J,Ostapchenko S,et al.arXiv:hep-ph/0209198.
[25]	Blaizot J P,Ollitrault J Y.Phys Rev,1987,D36:916.
[26]	Rischke D H,Gyulassy M.Nucl Phys,1996,A608:479.
[27]	Brown D A,Danielewicz P.Phys Lett,1997,B898:252.
[28]	[273 Brown D A,Danielewicz P.Phys Rev,2001,C64:014902.
[29]	E895 Collaboration,Panitkin S Y,et al.Phys Rev Lett,2001,87:112304.
[30]	Brown D A,Enokizono A,Heffner M,et al.Phys Rev,2005,C72:054902.
[31]	Yang Z T,Jiri M T,Zhang W N.Nuclear Physics Review,2009,26(2):117(in Chinese).(杨志韬,吉日木图,张卫宁.原子核物理评论,2009,26(2):117.)

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