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arXiv · 0707.0175

Determination of Delta G/G from Open Charm events at COMPASS

S. Koblitz
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Abstract

One of the main goals of the COMPASS experiment at CERN is the determination of the gluon polarisation in the nucleon, Delta G/G. It is determined from spin asymmetries in the scattering of 160 GeV/c polarised muons on a polarised LiD target. The gluon polarisation is accessed by the selection of photon-gluon fusion (PGF) events. A very clean selection of PGF events can be obtained with charmed mesons in the final state. Their detection is based on the reconstruction of D* and D0 mesons in the COMPASS spectrometer. The analysis method for the first measurement of Delta G/G from the open charm channel is described and the result from COMPASS for the 2002-2004 data taking period is presented.

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S. Koblitz. 2007-07-06. Determination of Delta G/G from Open Charm events at COMPASS. https://arxiv.org/abs/0707.0175

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