Using Heavy Quark Effective Theory with non-perturbatively determined parameters in a quenched lattice calculation, we evaluate the splittings between the ground state and the first two radially excited states of the Bs system at static order. We also determine the splitting between first excited and ground state, and between the Bs∗ and Bs ground states to order 1/mb. The Generalized Eigenvalue Problem and the use of all-to-all propagators are important ingredients of our approach.
@article{arxiv.1004.2661,
title = {HQET at order $1/m$: II. Spectroscopy in the quenched approximation},
author = {Benoît Blossier and Michele Della Morte and Nicolas Garron and Georg von Hippel and Tereza Mendes and Hubert Simma and Rainer Sommer},
journal= {arXiv preprint arXiv:1004.2661},
year = {2010}
}
Comments
(1+18) pages, 3 figures (4 pdf files); pdflatex; v2: corrections to table 1, results unaffected