Dimuon production in neutrino-nucleus collisions -- the SIDIS approach

TL;DR

This paper presents a direct calculation method for dimuon production in neutrino-nucleus collisions using a SIDIS approach, avoiding external acceptance corrections and improving agreement with experimental data.

Contribution

It introduces a novel SIDIS-based calculation for dimuon production that accounts for higher-order effects and parton distribution dependencies.

Findings

Good agreement with experimental data

Acceptance correction varies with parton distribution and perturbative order

Highlights limitations of previous proportionality assumptions

Abstract

Dimuon production is in many global parton distribution function analyses calculated by assuming that it is proportional to inclusive charm production. As this assumption breaks down at next-to-leading order in the perturbative expansion, we present a direct calculation of dimuon production that does not require an external acceptance correction. Our calculation utilizes semi-inclusive deep inelastic scattering and a decay function fitted to experimental data. We find our calculation to be in good agreement with available experimental data. Here we also demonstrate that the acceptance correction depends on the used parton distribution and perturbative order.