| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1845035 | Nuclear Physics B - Proceedings Supplements | 2008 | 4 Pages |
Abstract
The determination of the gluon polarization ΔG/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 6LiD target. At COMPASS the PGF mechanism is tagged by means of three different channels: charmed meson production and high-pT hadron pairs in either electro-production (Q2>1GeV2) or quasi-real photo-production (Q2<1GeV2). The status of the different analyses and the ΔG/G results obtained from the 2002-04 data samples are presented. The most precise measurement comes from the hight-pT quasi-real photo-production, yielding a small gluon polarization.
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