First extraction of valence transversities in a collinear framework

TL;DR

This paper reports the first extraction of valence transversity parton distributions using pion-pair production data in deep-inelastic scattering, enabling flavor separation within a collinear framework involving dihadron fragmentation functions.

Contribution

It introduces the first extraction of valence transversities in a collinear framework utilizing recent experimental data for flavor separation.

Findings

Successful flavor separation of valence transversities.

Utilization of dihadron fragmentation functions from electron-positron data.

First such extraction in a collinear framework.

Abstract

We present an extraction of the valence transversity parton distributions based on an analysis of pion-pair production in deep-inelastic scattering off transversely polarized targets. Recently released data for proton and deuteron targets at HERMES and COMPASS permit a flavor separation of valence transversities. The present extraction is performed in the framework of collinear factorization, where dihadron fragmentation functions are involved. The latter are taken from a previous analysis of electron-positron annihilation measurements.