Exploration for degradation of Lambda polarization produced in relativistic nucleus-nucleus collisions

	Exploration for degradation of Lambda polarization produced in relativistic nucleus-nucleus collisions
	Ye, YX; Chen, Z; Ruan, TN; Shen, J; Lu, HJ; Dong, WJ; Sa, BH; Tai, A; Tai A(台安)
刊名	HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
	2000
卷号	24 期号:2 页码:#REF!
关键词	degradation of Lambda polarization event generator quark-gluon plasma
其他题名	相对论核-核碰撞中产生的超子的退极化原因探讨
通讯作者	Ye, YX (reprint author), Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.
英文摘要	The degradation of Lambda transverse polarization produced in S + Pb central collisions at energy 200 GeV per nucleon has been studied in detail. The S + Pb central collision events have been generated using Monte-Carlo generator-LUCIAE at 200 GeV per nucleon, The various factors degrading Lambda transverse polarization have been analysed quantitatively. The ratios of Lambda's produced from rescattering, secondary production and decays of Sigma, Xi hyperons to the total measurable Lambda's in experiment have been investigated and the degradation effect of these Lambda on the total polarization has been determined. The simulation and calculation show that above three factors decrease the Lambda transverse polarization strongly, however, can not eliminate the polarization completely when the Lambda's are assumed to be produced from hadronic gas in the final stale. To explain the experimental data of vanished Lambda polarization, it probably needs to consider new mechanisms of Lambda production, including a weak effect of QGP formation.
学科主题	Physics
类目[WOS]	Physics, Nuclear ; Physics, Particles & Fields
收录类别	SCI
WOS记录号	WOS:000085719800006
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/226333]
专题	高能物理研究所_理论物理室
推荐引用方式 GB/T 7714	Ye, YX,Chen, Z,Ruan, TN,et al. Exploration for degradation of Lambda polarization produced in relativistic nucleus-nucleus collisions[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2000,24(2):#REF!.
APA	Ye, YX.,Chen, Z.,Ruan, TN.,Shen, J.,Lu, HJ.,...&台安.(2000).Exploration for degradation of Lambda polarization produced in relativistic nucleus-nucleus collisions.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,24(2),#REF!.
MLA	Ye, YX,et al."Exploration for degradation of Lambda polarization produced in relativistic nucleus-nucleus collisions".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 24.2(2000):#REF!.