Matrix elements of unstable states
High Energy Physics - Lattice
2015-06-05 v1 High Energy Physics - Phenomenology
Nuclear Theory
Abstract
Using the language of non-relativistic effective Lagrangians, we formulate a systematic framework for the calculation of resonance matrix elements in lattice QCD. The generalization of the L\"uscher-Lellouch formula for these matrix elements is derived. We further discuss in detail the procedure of the analytic continuation of the resonance matrix elements into the complex energy plane and investigate the infinite-volume limit.
Cite
@article{arxiv.1205.4642,
title = {Matrix elements of unstable states},
author = {V. Bernard and D. Hoja and U. -G. Meißner and A. Rusetsky},
journal= {arXiv preprint arXiv:1205.4642},
year = {2015}
}