Semi-inclusive deeply inelastic neutrino and antineutrino nucleus scattering

TL;DR

This paper calculates semi-inclusive deep inelastic neutrino and antineutrino nucleus scattering processes, focusing on azimuthal asymmetries and intrinsic transverse momentum distributions to probe hadronic structure within a QCD parton model framework.

Contribution

It provides a unified calculation of neutral and charged current processes, including azimuthal asymmetries and intrinsic asymmetries, within the twist-3 approximation in the QCD parton model.

Findings

Azimuthal asymmetries expressed in terms of TMD PDFs and electroweak couplings.

Intrinsic asymmetries reveal imbalance in quark transverse momentum distributions.

Framework applicable for extracting TMD PDFs from experimental data.

Abstract

The (anti)neutrino nucleus scattering plays a very important role in probing the hadronic structure as well as the electroweak phenomenologies. To this end, we calculate the jet production semi-inclusive deeply inelastic (anti)neutrino nucleus scattering process. The initial (anti)neutrino is assumed to be scattered off by a target particle with spin 1. Due to the limitation of the factorization theorem, calculations are carried out in the quantum chromodynamics parton model framework up to tree level twist-3. We consider both the neutral current and the charged current processes and write them into a unified form due to the similar interaction forms. Considering the angular modulations and polarizations of the cross section, we calculate the complete azimuthal asymmetries. We also calculate the intrinsic asymmetries which reveal the imbalance in the distribution of the intrinsic transverse momentum of the quark. We find that these asymmetries can be expressed in terms of the transverse momentum-dependent parton distribution functions (TMD PDFs) and the electroweak couplings. With the determined couplings, these asymmetries can be used to extract the TMD PDFs and further to study the hadronic structures.