Simultaneous extraction of transversity and Collins functions from new SIDIS and e+e- data

TL;DR

This paper performs a comprehensive re-analysis of recent SIDIS and e+e- data to simultaneously extract transversity and Collins functions, testing a new parameterization approach.

Contribution

It introduces a revised analysis framework with a new parameterization of Collins functions for simultaneous extraction from diverse experimental data.

Findings

Successful extraction of transversity and Collins functions

Validation of the new Collins function parameterization

Enhanced understanding of spin-dependent fragmentation processes

Abstract

We present a global re-analysis of the most recent experimental data on azimuthal asymmetries in semi-inclusive deep inelastic scattering, from the HERMES and COMPASS Collaborations, and in e+e- --> h_1 h_2 X processes, from the Belle Collaboration. The transversity and the Collins functions are extracted simultaneously, in the framework of a revised analysis in which a new parameterisation of the Collins functions is also tested.