New Results on Δg/g from COMPASS Experiment at CERN

被引：0

作者：

Nassalski, Jan P. ^{[1
]}

机构：

[1] Soltan Inst Nucl Studies, Otwock, Poland

来源：

NUCLEAR PHYSICS A | 2009年 / 827卷 / 1-4期

关键词：

keyword Deep inelastic scattering; Spin structure of nucleon; Gluon polarisation;

D O I：

10.1016/j.nuclphysa.2009.05.040

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：

The gluon polarisation, Delta g/g, is determined from photon-gluon fusion (PGF) events produced in scattering of 160GeV polarised muons off polarised deuterons. Two independent methods based on LO QCD are used to extract PGP events: selection of D or D* mesons or a pair of high p(t) hadrons. In the former we Use the data collected in 2002-2004 and 2006 and apply a new method of the signal strength parametrisation. In the latter we select Q(2) > 1 GeV(2) region from 2002-2004 data and apply a new method of accounting for background processes.

引用

页码：213C / 215C

页数：3

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