Measurement of Longitudinal Spin Asymmetries From W → e Boson Decay in Polarized pp Collisions at √s=500 GeV at RHIC-PHENIX

被引：0
|
作者：
Okada, Kensuke [1 ]
机构：
[1] BNL, Upton, NY 11973 USA
来源：
19TH INTERNATIONAL SPIN PHYSICS SYMPOSIUM (SPIN2010), PT 1 | 2011年 / 295卷
关键词：
DISTRIBUTIONS;
D O I：
10.1088/1742-6596/295/1/012072
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We report the measurement of the parity violating single spin asymmetries for inclusive high transverse momentum electrons and positrons in polarized p + p collisions at a center of mass energy of root s = 500 GeV with the PHENIX detector at RHIC. These electrons are attributed to the decay of W-+/- and Z(0) bosons, and measured production cross section is consistent with the expectations. The W production is confirmed for the first time in p + p collisions. Its spin asymmetry in the polarized p + p collisions is a important probe for the quark flavor decomposition of the proton spin.
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页数：5
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