Bazavov, A. et al. (2012) Neutral B-meson mixing from three-flavor lattice quantum chromodynamics: Determination of the SU (3)-breaking ratio ξ. Physical Review D, 86(3), 034503. (doi: 10.1103/PhysRevD.86.034503)
Full text not currently available from Enlighten.
Abstract
We study SU(3)-breaking effects in the neutral Bd-B⎯⎯⎯d and Bs-B⎯⎯⎯s systems with unquenched Nf=2+1 lattice quantum chromodynamics (QCD). We calculate the relevant matrix elements on the MILC collaboration’s gauge configurations with asqtad-improved staggered sea quarks. For the valence light-quarks (u, d, and s) we use the asqtad action, while for b quarks we use the Fermilab action. We obtain ξ=fBsBBs‾‾‾√/fBdBBd‾‾‾‾√=1.268±0.063. We also present results for the ratio of bag parameters BBs/BBd and the ratio of Cabibbo-Kobayashi-Maskawa matrix elements |Vtd|/|Vts|. Although we focus on the calculation of ξ, the strategy and techniques described here will be employed in future extended studies of the B mixing parameters ΔMd,s and ΔΓd,s in the standard model and beyond.
Item Type: | Articles |
---|---|
Additional Information: | (Fermilab Lattice and MILC Collaborations). |
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Bouchard, Dr Chris and DeTar, Professor Carleton |
Authors: | Bazavov, A., Bernard, C., Bouchard, C.M., DeTar, C., Di Pierro, M., El-Khadra, A.X., Evans, R.T., Freeland, E.D., Gámiz, E., Gottlieb, S., Heller, U.M., Hetrick, J.E., Jain, R., Kronfeld, A.S., Laiho, J., Levkova, L., Mackenzie, P..B., Neil, E.T., Oktay, M.B., Simone, J.N., Sugar, R., Toussaint, D., and Van de Water, R.S. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | Physical Review D |
Publisher: | AIP Publishing |
ISSN: | 1550-7998 |
ISSN (Online): | 1551-7616 |
University Staff: Request a correction | Enlighten Editors: Update this record