Towards lattice-assisted hadron physics calculations based on QCD n-point functions
High Energy Physics - Lattice
2019-04-25 v1
Abstract
We present preliminary lattice results for the nonperturbative tensor structure of the vector and axial-vector quark-antiquark vertices in QCD. Our lattice calculations are for mass-degenerate Wilson fermion flavors whose quark mass values include an almost physical one. We compare our lattice results with the corresponding continuum solutions of the inhomogeneous Bethe-Salpeter equations in a rainbow-ladder truncation. We find similarities in the momentum dependencies of the form factors but also clear deviations at low momentum.
Cite
@article{arxiv.1904.10705,
title = {Towards lattice-assisted hadron physics calculations based on QCD n-point functions},
author = {André Sternbeck and Milena Leutnant and Gernot Eichmann},
journal= {arXiv preprint arXiv:1904.10705},
year = {2019}
}
Comments
7 pages, 3 figures, Proceedings of the 36th Annual International Symposium on Lattice Field Theory (Lattice 2018), 22-28 July 2018, Michigan State University, East Lansing, Michigan USA