Contraction Diagram Analysis in Pion-Kaon Scattering
High Energy Physics - Lattice
2020-06-17 v2 High Energy Physics - Phenomenology
Nuclear Theory
Abstract
We study the contributions from the connected and disconnected contraction diagrams to the pion-kaon scattering amplitude within the framework of SU partially-quenched chiral perturbation theory. Combining this with a finite-volume analysis, we demonstrate that a lattice calculation of the easier computable connected correlation functions is able to provide valuable information of the noisier disconnected correlation functions, and may serve as a theory guidance for the future refinement of the corresponding lattice techniques.
Cite
@article{arxiv.2002.01763,
title = {Contraction Diagram Analysis in Pion-Kaon Scattering},
author = {Chaitra Kalmahalli Guruswamy and Ulf-G. Meißner and Chien-Yeah Seng},
journal= {arXiv preprint arXiv:2002.01763},
year = {2020}
}
Comments
Version to appear in Nuclear Physics B