Three-particle $N\pi\pi$ state contribution to the nucleon two-point function in lattice QCD
High Energy Physics - Lattice
2018-05-23 v2
Abstract
The three-particle -state contribution to the QCD two-point function of standard nucleon interpolating fields is computed to leading order in chiral perturbation theory. Using the experimental values for two low-energy coefficients the impact of this contribution on lattice QCD calculations of the nucleon mass is estimated. The impact is found to be at the per mille level at most and negligible in practice.
Keywords
Cite
@article{arxiv.1802.10442,
title = {Three-particle $N\pi\pi$ state contribution to the nucleon two-point function in lattice QCD},
author = {Oliver Bar},
journal= {arXiv preprint arXiv:1802.10442},
year = {2018}
}
Comments
16 pages, 5 figures. V2: Error in eq. (A2) corrected, figures 3 to 5 updated, conclusions unchanged. Discussion of FV corrections expanded. Typos corrected, references added. Matches published version in Phys. Rev. D