Abstract
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 and From these values we derive an averaged gluon polarization at an average fraction of nucleon momentum carried by gluons
- Received 31 January 2004
DOI:https://doi.org/10.1103/PhysRevD.70.012002
©2004 American Physical Society