Scattering phases for meson and baryon resonances on general moving-frame lattices
High Energy Physics - Lattice
2013-05-30 v2 High Energy Physics - Theory
Nuclear Theory
Abstract
A proposal by L\"uscher enables one to compute the scattering phases of elastic two-body systems from the energy levels of the lattice Hamiltonian in a finite volume. In this work we generalize the formalism to S--, P-- and D--wave meson and baryon resonances, and general total momenta. Employing nonvanishing momenta has several advantages, among them making a wider range of energy levels accessible on a single lattice volume and shifting the level crossing to smaller values of .
Keywords
Cite
@article{arxiv.1206.4141,
title = {Scattering phases for meson and baryon resonances on general moving-frame lattices},
author = {M. Göckeler and R. Horsley and M. Lage and U. -G. Meissner and P. E. L. Rakow and A. Rusetsky and G. Schierholz and J. M. Zanotti},
journal= {arXiv preprint arXiv:1206.4141},
year = {2013}
}
Comments
41 pages, 3 figures. References added, minor edits to text. Version to be published in Phys. Rev. D