Weighted azimuthal asymmetries in a diquark spectator model

TL;DR

This paper analytically computes weighted azimuthal asymmetries in lepton-nucleon scattering and Drell-Yan processes using a diquark spectator model, comparing results with experimental data and making predictions for future experiments.

Contribution

It introduces an analytical approach to calculate azimuthal asymmetries using a diquark spectator model and provides comparisons with experimental data and future predictions.

Findings

Good agreement with preliminary experimental data for Collins and Sivers effects.

Predictions made for upcoming experiments in similar processes.

Analytical expressions derived for asymmetries in the diquark spectator framework.

Abstract

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.