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The gluon polarization $ΔG/G$ at COMPASS

C. Bernet
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Abstract

The COMPASS experiment will determine the gluon polarization in the nucleon $ΔG/G$ from the double helicity asymmetry measured in the scattering of a 160 GeV muon beam on a longitudinally polarized deuteron target, by selecting the photon-gluon fusion reaction. This reaction can be tagged either by the production of open charm, or by the production of high $p_T$ hadron pairs. The first asymmetry obtained with the latter method is presented.

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C. Bernet. 2004-05-25. The gluon polarization $ΔG/G$ at COMPASS. https://arxiv.org/abs/hep-ex/0405073

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