Neutrino-jet correlations in charged-current SIDIS

TL;DR

This paper provides a comprehensive leading-order twist-3 calculation of neutrino-jet correlations in charged-current SIDIS, revealing azimuthal asymmetries and introducing an observable sensitive to quark flavor distributions.

Contribution

It presents the first systematic twist-3 level calculation of neutrino-jet correlations in charged-current SIDIS, including azimuthal asymmetries and a new observable for flavor separation.

Findings

Derived differential cross sections in terms of structure functions and TMD PDFs.

Identified azimuthal and intrinsic asymmetries in neutrino-jet correlations.

Proposed the observable $A^C$ as a sensitive probe for valence and sea quark distributions.

Abstract

Charged-current deep inelastic scattering plays a significant role in determining parton distribution functions with flavour separation.In this work, we present a systematic calculation of the charged-current semi-inclusive deep inelastic scattering (SIDIS) in the $eN$ collinear frame up to twist-3 level at leading order. Semi-inclusive refers to the process in which a jet is detected in addition to the scattered neutrino. We focus on neutrino-jet correlations in our calculation. We first present the differential cross section in terms of structure functions, followed by the differential cross section expressed in term of transverse momentum dependent parton distribution functions. We derive the complete set of azimuthal asymmetries and intrinsic asymmetries. We also introduce an observable $A^C$, defined as the ratio of the difference to the sum of differential cross sections for electron and positron semi-inclusive deep inelastic scattering.We notice that $A^C$ provides a sensitive probe for valence and sea quark distribution functions