Fragmentation functions for pions, kaons, protons and charged hadrons

TL;DR

This paper introduces new NLO fragmentation functions for pions, kaons, protons, and charged hadrons by analyzing diverse experimental data, including identified hadrons, to improve quark and anti-quark separation.

Contribution

It provides the first combined NLO analysis incorporating identified hadron data to distinguish quark from anti-quark fragmentation functions.

Findings

New fragmentation functions for various hadrons are obtained.

Enhanced discrimination between quark and anti-quark fragmentation functions.

Applicable to multiple high-energy collision processes.

Abstract

We present new sets of pion, kaon, proton and inclusive charged hadron fragmentation functions obtained in NLO combined analyses of single-inclusive hadron production in electron-positron annihilation, proton-proton collisions, and deep-inelastic lepton-proton scattering with either particles identified in the final state. At variance with all previous fits, the present analyses take into account data where hadrons of different electrical charge are identified, which allow to discriminate quark from anti-quark fragmentation functions.