https://doi.org/10.1140/epja/i2010-11016-y
Regular Article - Theoretical Physics
Weighted azimuthal asymmetries in a diquark spectator model
1
Dipartimento di Fisica Nucleare e Teorica, Università di Pavia, I-27100, Pavia, Italy
2
Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, I-27100, Pavia, Italy
* e-mail: marco.radici@pv.infn.it
Received:
19
March
2010
Revised:
8
June
2010
Accepted:
18
July
2010
Published online:
5
August
2010
We analytically calculate weighted azimuthal asymmetries in semi-inclusive lepton-nucleon deep-inelastic scattering and Drell-Yan processes, using transverse-momentum-dependent partonic densities obtained in a diquark spectator model. We compare the asymmetries with available preliminary experimental data, in particular for the Collins and the Sivers effect. We make predictions for other cases of interest in running and planned experiments.
© SIF, Springer-Verlag Berlin Heidelberg, 2010