标题:Longitudinal spin transfer of Λ and Λ̄ in polarized pp collisions at √s = 200 GeV at STAR
作者:Xu Q.
作者机构:[Xu, Q] School of Physics, Shandong University, Ji'nan, Shandong 250100, China
通讯作者:Xu, Q(xuqh@sdu.edu.cn)
通讯作者地址:[Xu, Q] School of Physics, Shandong University, Ji'nan, Shandong 250100, China;
来源:Journal of Physics: Conference Series
出版年:2011
卷:295
期:1
DOI:10.1088/1742-6596/295/1/012081
摘要:We report our measurement on longitudinal spin transfer, DLL, from high energy polarized protons to Λ and Λ̄ hyperons in proton-proton collisions at √s = 200 GeV with the STAR detector at RHIC. The current measurements cover Λ, Λ̄ pseudorapidity |η| < 1.2 and transverse momenta pT up to 4 GeV/c using the data taken in 2005. The longitudinal spin transfer is found to be DLL = -0.03 ± 0.13(stat) ± 0.04(syst) for inclusive Λ and D LL = -0.12 ± 0.08(stat) ± 0.03(syst) for inclusive hyperons with 〈η〉 = 0.5 and 〈pT〉 = 3.7GeV/c. The prospects with 2009 data and the future measurements are also given.
收录类别:SCOPUS
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-79959223943&doi=10.1088%2f1742-6596%2f295%2f1%2f012081&partnerID=40&md5=6dd9d7bc2dcfd30ff5c92b53394a5442
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