Measurement of the Gluon Polarization of the Nucleon at COMPASS

被引：0
|
作者：
Reggiani, Davide [1 ]
机构：
[1] CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland
来源：
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2008年 / 184卷
关键词：
D O I：
10.1016/j.nuclphysbps.2008.09.135
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
The determination of the gluon polarization Delta G/G represents one of the main goals of the COMPASS Collaboration at CERN. This quantity is experimentally accessible by selecting photon gluon fusion (PGF) events in the scattering of a polarized 160 GeV muon beam off a polarized (6)LiD target. At COMPASS the PGF mechanism is tagged by means of three different channels: charmed meson production and high-p(T) hadron pairs in either electro-production (Q(2) > 1 GeV(2)) or quasi-real photo-production (Q(2) < 1 GeV(2)). The status of the different analyses and the Delta G/G results obtained from the 2002-04 data samples are presented. The most precise measurement comes from the hight-p(T) quasi-real photo-production, yielding a small gluon polarization.
引用
收藏
页码：56 / 59
页数：4
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