Abstract
We present a determination of the gluon polarisation δg/g in the nucleon, based on the longitudinal double-spin asymmetry of DIS events with Q2>1(GeV/c)2 including a pair of large transverse-momentum hadrons in the final state. The data were obtained by the COMPASS experiment at CERN using a 160 GeV/c polarised muon beam scattering off a polarised LiD6 target. The gluon polarisation is evaluated by a Neural Network approach for three intervals of the gluon momentum fraction xg covering the range 0.04
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CITATION STYLE
Adolph, C., Alekseev, M. G., Alexakhin, V. Y., Alexandrov, Y., Alexeev, G. D., Amoroso, A., … Zvyagin, A. (2013). Leading order determination of the gluon polarisation from DIS events with high-pT hadron pairs. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 718(3), 922–930. https://doi.org/10.1016/j.physletb.2012.11.056
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