Azimuthal Asymmetric Distribution of Hadrons Inside a Jet at Hadron Collider

TL;DR

This paper investigates the azimuthal asymmetry of hadrons within high-energy jets in polarized proton collisions, linking it to the Collins effect and quark transversity, and discusses its potential to reveal fundamental spin structure insights.

Contribution

It demonstrates that the Collins function in jet processes is equivalent to that in semi-inclusive deep inelastic scattering, enabling new tests of universality and transversity.

Findings

The azimuthal asymmetry is sensitive to the Collins effect and transversity.

The process can test the universality of fragmentation functions.

Provides a method to extract quark transversity distributions.

Abstract

We study the azimuthal asymmetric distribution of hadrons inside a high energy jet in the single transverse polarized proton proton scattering, coming from the Collins effect multiplied by the quark transversity distribution. We argue that the Collins function in this process is the same as that in the semi-inclusive deep inelastic scattering. The experimental study of this process will provide us important information on the quark transversity distribution and test the universality of the fragmentation functions.