Measurements of the Gluon Polarization in the Nucleon at COMPASS

One of the main goals of the COMPASS experiment at CERN is the determination of the gluon polarization in the nucleon, $\Delta G/G$, from double spin asymmetries in deep inelastic scattering of polarized muons on a polarized $^{6}$LiD target. The gluon polarization is accessible in photon–gluon fusion (PGF) events, either tagging them by open charm production or enriching them in the inclusive production of hadron pairs with high transverse momentum. The analysis method is outlined and results from the data taking periods of 2002–2004 are shown.