Speaker
Adam Szabelski
(National Centre for Nuclear Research (PL))
Description
The COMPASS collaboration has recently released results of the gluon
contribution to the Sivers effect measurement from high-pt hadron pairs
both for proton and deuteron targets. The analysis method is based on the
assumption that in the high Q2 range three processes contribute to the
cross section: Leading Process, QCD Compton and Photon Gluon Fusion. The
selection of high-pt hadron pairs enhances the fraction of PGF events in
the sample and assures weak kinematic dependence of the asymmetries for each
process. A novel approach of event-by-event weighting based on Monte Carlo
simulations and with the use of Neural Networks is applied to extract all
three asymmetries from the same data sample.
| Session | x: not specified |
|---|
Author
Adam Szabelski
(National Centre for Nuclear Research (PL))
