Bernard, C. et al. (2011) Tuning Fermilab heavy quarks in 2+1 flavor lattice QCD with application to hyperfine splittings. Physical Review D, 83(3), (doi: 10.1103/PhysRevD.83.034503)
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Publisher's URL: http://dx.doi.org/10.1103/PhysRevD.83.034503
Abstract
We report the nonperturbative tuning of parameters—κ<sub>c</sub>, κ<sub>b</sub>, and κ<sub>crit</sub>—that are related to the bare heavy-quark mass in the Fermilab action. This requires the computation of the masses of D<sub>s</sub>(*) and B<sub>s</sub>(*) mesons comprised of a Fermilab heavy quark and a staggered light quark. Additionally, we report the hyperfine splittings for D<sub>s</sub>(*) and B<sub>s</sub>(*) mesons as a cross-check of our simulation and analysis methods. We find a splitting of 145±15 MeV for the D<sub>s</sub> system and 40±9 MeV for the B<sub>s</sub> system. These are in good agreement with the Particle Data Group average values of 143.9±0.4 MeV and 46.1±1.5 MeV, respectively. The calculations are carried out with the MILC 2+1 flavor gauge configurations at three lattice spacings a≈0.15, 0.12, and 0.09 fm.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Laiho, Dr John and DeTar, Professor Carleton |
| Authors: | Bernard, C., DeTar, C., Di Pierro, M., El-Khadra, A., Evans, R., Freeland, E., Gámiz, E., Gottlieb, S., Heller, U., Hetrick, J., Kronfeld, A., Laiho, J., Levkova, L., Mackenzie, P., Simone, J., Sugar, R., Toussaint, D., and Van de Water, R. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Physical Review D |
| Publisher: | American Physical Society |
| ISSN: | 1550-7998 |
| ISSN (Online): | 1089-4918 |
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