Quark fragmentation as a probe of dynamical mass generation
High Energy Physics - Phenomenology
2019-10-14 v2 High Energy Physics - Experiment
Nuclear Theory
Abstract
We address the propagation and hadronization of a struck quark by studying the gauge invariance of the color-averaged cut quark propagator, and by relating this to the single inclusive quark fragmentation correlator by means of new sum rules. Using suitable Wilson lines, we provide a gauge-invariant definition for the mass of the color-averaged dressed quark and decompose this into the sum of a current and an interaction-dependent component. The latter, which we argue is an order parameter for dynamical chiral symmetry breaking, also appears in the sum rule for the twist-3 fragmentation function, providing a specific experimental way to probe the dynamical generation of mass in Quantum Chromo Dynamics.
Keywords
Cite
@article{arxiv.1903.04458,
title = {Quark fragmentation as a probe of dynamical mass generation},
author = {Alberto Accardi and Andrea Signori},
journal= {arXiv preprint arXiv:1903.04458},
year = {2019}
}
Comments
published version