Publications
Publication Information
Title | On the connection between quark propagation and hadronization |
Authors | Andrea Signori, Alberto Accardi |
JLAB number | JLAB-THY-20-3193 |
LANL number | arXiv:2005.11310 |
Other number | DOE/OR/23177-4972 |
Document Type(s) | (Journal Article) |
Associated with EIC: | No |
Supported by Jefferson Lab LDRD Funding: | No |
Funding Source: | Nuclear Physics (NP) |
Other Funding: | European Commission - SQuHadron, grant ID: 795475 |
Journal Compiled for European Physical Journal C Volume 80 Issue 9 Refereed | |
Publication Abstract: | We investigate the properties and structure of the recently discussed ``fully inclusive jet correlator'', namely, the gauge-invariant field correlator characterizing the final state hadrons produced by a free quark as this propagates in the vacuum. Working at the operator level, we connect this object to the single-hadron fragmentation correlator of a quark, and exploit a novel gauge invariant spectral decomposition technique to derive a complete set of momentum sum rules for quark fragmentation functions up to twist-3 level; known results are recovered, and new sum rules proposed. We then show how one can explicitly connect quark hadronization and dynamical quark mass generation by studying the inclusive jet's gauge-invariant mass term. This mass is, on the one hand, theoretically related to the integrated chiral-odd spectral function of the quark, and, on the other hand, is experimentally accessible through the $E$ and $\widetilde E$ twist-3 fragmentation function sum rules. Thus, measurements of these fragmentation functions in deep inelastic processes provide one with an experimental gateway into the dynamical generation of mass in Quantum Chromodynamics. |
Experiment Numbers: | other |
Group: | THEORY CENTER |
Document: | |
DOI: | https://doi.org/10.1140/epjc/s10052-020-8380-1 |
Accepted Manuscript: | Accardi-Signori2020_Article_OnTheConnectionBetweenQuarkPro.pdf |
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