QCD resummation for semi-inclusive hadron production processes

TL;DR

This paper studies the resummation of large logarithmic corrections in semi-inclusive hadron production, showing modest but significant effects that impact the extraction of fragmentation functions in high-precision experiments.

Contribution

It introduces a resummation approach for large logarithms in semi-inclusive processes, improving the accuracy of theoretical predictions for hadron multiplicities.

Findings

Modest enhancement of hadron multiplicities in relevant kinematic regimes

Resummation improves theoretical predictions for fragmentation functions

Results are relevant for high-precision experimental analyses

Abstract

We investigate the resummation of large logarithmic perturbative corrections to hadron production in electron-positron annihilation and semi-inclusive deep-inelastic scattering. We find modest, but significant, enhancements of hadron multiplicities in the kinematic regimes accessible in present high-precision experiments. Our results are therefore relevant for the determination of hadron fragmentation functions from data for these processes.