We extend our previous studies to calculate the B meson B parameters B_B and B_S on the lattice, and present an update of the results for the B_s meson width difference. We perform an extensive study of systematic errors in the quenched calculation of the B-parameters, and find that the systematic errors are in good control using the NRQCD action for heavy quark. We also report our preliminary results from unquenched simulations.
@article{arxiv.hep-ph/0104080,
title = {Width difference of the B_s mesons from lattice QCD},
author = {Shoji Hashimoto and Norikazu Yamada},
journal= {arXiv preprint arXiv:hep-ph/0104080},
year = {2016}
}
Comments
4 pages, 3 figures; to appear in the Proceedings of the 4th International Workshop on B Physics and CP Violation (BCP4), 19-23 Feb. 2001, Ise-Shima, Japan