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Exploration for degradation of Lambda polarization produced in relativistic nucleus-nucleus collisions
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
Ye, YX; Chen, Z; Ruan, TN; Shen, J; Lu, HJ; Dong, WJ; Sa, BH; Tai, A; Tai A(台安)
2000
发表期刊HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
卷号24期号:2页码:#REF!
通讯作者Ye, YX (reprint author), Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.
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.
文章类型Article
关键词degradation of Lambda polarization event generator quark-gluon plasma
学科领域Physics
收录类别SCI
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000085719800006
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/226333
专题理论物理室
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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!.
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