Abstract
One of the main goals of the COMPASS experiment at CERN is the measurement of the gluon polarization in the nucleon, ΔG, by scattering of 160 GeV/c polarized muons on a polarized 6LiD target. This quantity is experimentally accessible via the photon-gluon fusion process, tagged either by charmed mesons production or by high pT hadron pairs production. The status of these two analyses is presented. Preliminary results obtained from the 2002/03 data samples on the D0 and the D∗± channels are shown. The high pT hadron pairs, produced at Q2≶1 (GeV/c)2, were also analysed, and the measured ΔG/G values are presented here.
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