Identified Hadron Production in Deeply Inelastic Neutrino-Nucleon Scattering

Abstract

The production of identified hadrons in semi-inclusive deep-inelastic scattering (SIDIS) is sensitive to parton distribution functions and hadron fragmentation functions. Neutrino-induced SIDIS processes probe combinations of these functions different from their charged-lepton-induced counterparts. We compute charged pion production in (anti-)neutrino induced SIDIS up to second order in perturbative QCD and compare our predictions to precise legacy fixed-target data. We demonstrate the high sensitivity of these data on the parametrization of the fragmentation functions and discuss future SIDIS probes at the LHC Forward Physics Facility.

Figures (4)

• Figure 1: Theory predictions for pion multiplicities for (anti-)neutrino induced DIS processes up to NNLO compared to the ABCMO measurement Aachen-Bonn-CERN-Munich-Oxford:1982jrr.
• Figure 2: Dominant partonic channels contributing to flavor-favored (left frames) and flavor-unfavored (right frames) SIDIS reactions at NLO and NNLO. Contributions are normalized to unity in each bin.
• Figure 3: Comparison of NNLO multiplicities computed with different FF sets to data. Ratios are taken with respect to the multiplicity computed with the BDSSV22_NNLO set.
• Figure 4: Expected pion multiplicity distribution for FPF-type experiments at the LHC.