Quark scalar, axial and tensor charges in the Schwinger-Dyson formalism
High Energy Physics - Phenomenology
2014-12-19 v1
Abstract
The quark scalar, axial and tensor charges of nucleon are calculated in the Schwinger-Dyson formalism. We first calculate these charges in the rainbow-ladder truncation using the IR cut quark-gluon vertex, and show that the result is in agreement with the known data. We then perform the same calculation with the phenomenological IR singular quark-gluon vertex. In this case, the Schwinger-Dyson equation does not converge. We show that this result suggests the requirement of additional corrections to the rainbow-ladder truncation, due to the interaction between quark and gluons in the deep IR region.
Keywords
Cite
@article{arxiv.1412.5794,
title = {Quark scalar, axial and tensor charges in the Schwinger-Dyson formalism},
author = {Nodoka Yamanaka},
journal= {arXiv preprint arXiv:1412.5794},
year = {2014}
}
Comments
6 pages, 5 figures. Proceedings of the XI th International Conference on Quark Confinement and the Hadron Spectrum (Confinement XI)