We present a measurement of the longitudinal spin cross section asymmetry for deep-inelastic muon-nucleon interactions with two high transverse momentum hadrons in the final state. Two methods of event classification are used to increase the contribution of the photon-gluon fusion process to above 30%. The most effective one, based on a neural network approach, provides the asymmetries [Formula Presented] and [Formula Presented] From these values we derive an averaged gluon polarization [Formula Presented] at an average fraction of nucleon momentum carried by gluons [Formula Presented].
|Number of pages||1|
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|Publication status||Published - 2004|
|MoE publication type||A1 Journal article-refereed|