标题:Measurement of Longitudinal Spin Asymmetries for Weak Boson Production in Polarized Proton-Proton Collisions at STAR
作者:Zhang, Jinlong
通讯作者:Zhang, JL;Zhang, JL
作者机构:[Zhang, Jinlong] Shandong Univ, Sch Phys, Jinan 250100, Peoples R China.; [Zhang, Jinlong] Shandong Univ, Key Lab Particle Phys & Particle Irradiat 更多
会议名称:21st International Symposium on Spin Physics (SPIN)
会议日期:OCT 20-24, 2014
来源:PROCEEDINGS OF THE 21ST INTERNATIONAL SYMPOSIUM ON SPIN PHYSICS (SPIN2014)
出版年:2016
卷:40
DOI:10.1142/S2010194516600193
关键词:Weak boson; quark polarization
摘要:The production of W-+/- bosons in longitudinally polarized p + p collisions is a powerful tool to study the spin-flavor structure of the proton. We report measurements of single- and double-spin asymmetries for W and Z/gamma* production in longitudinally polarized proton-proton collisions at root s = 510 GeV at RHIC. The single-spin asymmetry results for W-+/- from data sets collected by STAR experiment in 2011 and 2012 provided new constraints on proton's polarized sea quark distributions and prefer a sizable value for (u) over bar polarization. The status for the analysis of a much larger data set collected by STAR in (C) 2013 will also be given.
收录类别:CPCI-S
资源类型:会议论文
TOP