Heavy-light Mesons and Baryons with b quarks
High Energy Physics - Lattice
2008-11-26 v2
Abstract
We present lattice results for the spectrum of mesons containing one heavy quark and of baryons containing one or two heavy quarks. The calculation is done in the quenched approximation using the NRQCD formalism for the heavy quark. We analyze the dependence of the mass splittings on both the heavy and the light quark masses. Meson P-state fine structure and baryon hyperfine splittings are resolved for the first time. We fix the b quark mass using both M_B and M_{\Lambda_b}, and our best estimate is m_b^\MSbar(m_b^\MSbar) = 4.35(10)({}^{-3}_{+2})(10) GeV. The spectrum, obtained by interpolation to m_b, is compared with the experimental data.
Keywords
Cite
@article{arxiv.hep-lat/9912034,
title = {Heavy-light Mesons and Baryons with b quarks},
author = {A. Ali Khan and T. Bhattacharya and S. Collins and C. T. H. Davies and R. Gupta and C. Morningstar and J. Shigemitsu and J. Sloan},
journal= {arXiv preprint arXiv:hep-lat/9912034},
year = {2008}
}
Comments
34 pages, LaTeX, 13 postscript figures, version as publish in Phys. Rev. D