Tuning Fermilab heavy quarks in 2+1 flavor lattice QCD with application to hyperfine splittings

C. Bernard, C. Detar, M. Di Pierro, A. X. El-Khadra, R. T. Evans, E. D. Freeland, E. Gámiz, Steven Gottlieb, U. M. Heller, J. E. Hetrick, A. S. Kronfeld, J. Laiho, L. Levkova, P. B. MacKenzie, J. N. Simone, R. Sugar, William D Toussaint, R. S. Van De Water

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Abstract

We report the nonperturbative tuning of parameters-κc, κb, and κcrit-that are related to the bare heavy-quark mass in the Fermilab action. This requires the computation of the masses of Ds(*) and Bs(*) mesons comprised of a Fermilab heavy quark and a staggered light quark. Additionally, we report the hyperfine splittings for Ds(*) and Bs(*) mesons as a cross-check of our simulation and analysis methods. We find a splitting of 145±15MeV for the Ds system and 40±9MeV for the Bs system. These are in good agreement with the Particle Data Group average values of 143.9±0.4MeV and 46.1±1.5MeV, respectively. The calculations are carried out with the MILC 2+1 flavor gauge configurations at three lattice spacings a0.15, 0.12, and 0.09 fm.

Original languageEnglish (US)
Article number034503
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume83
Issue number3
DOIs
StatePublished - Feb 23 2011

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quantum chromodynamics
tuning
quarks
mesons
spacing
configurations
simulation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Bernard, C., Detar, C., Di Pierro, M., El-Khadra, A. X., Evans, R. T., Freeland, E. D., ... Van De Water, R. S. (2011). Tuning Fermilab heavy quarks in 2+1 flavor lattice QCD with application to hyperfine splittings. Physical Review D - Particles, Fields, Gravitation and Cosmology, 83(3), [034503]. https://doi.org/10.1103/PhysRevD.83.034503

Tuning Fermilab heavy quarks in 2+1 flavor lattice QCD with application to hyperfine splittings. / Bernard, C.; Detar, C.; Di Pierro, M.; El-Khadra, A. X.; Evans, R. T.; Freeland, E. D.; Gámiz, E.; Gottlieb, Steven; Heller, U. M.; Hetrick, J. E.; Kronfeld, A. S.; Laiho, J.; Levkova, L.; MacKenzie, P. B.; Simone, J. N.; Sugar, R.; Toussaint, William D; Van De Water, R. S.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 83, No. 3, 034503, 23.02.2011.

Research output: Contribution to journalArticle

Bernard, C, Detar, C, Di Pierro, M, El-Khadra, AX, Evans, RT, Freeland, ED, Gámiz, E, Gottlieb, S, Heller, UM, Hetrick, JE, Kronfeld, AS, Laiho, J, Levkova, L, MacKenzie, PB, Simone, JN, Sugar, R, Toussaint, WD & Van De Water, RS 2011, 'Tuning Fermilab heavy quarks in 2+1 flavor lattice QCD with application to hyperfine splittings', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 83, no. 3, 034503. https://doi.org/10.1103/PhysRevD.83.034503
Bernard, C. ; Detar, C. ; Di Pierro, M. ; El-Khadra, A. X. ; Evans, R. T. ; Freeland, E. D. ; Gámiz, E. ; Gottlieb, Steven ; Heller, U. M. ; Hetrick, J. E. ; Kronfeld, A. S. ; Laiho, J. ; Levkova, L. ; MacKenzie, P. B. ; Simone, J. N. ; Sugar, R. ; Toussaint, William D ; Van De Water, R. S. / Tuning Fermilab heavy quarks in 2+1 flavor lattice QCD with application to hyperfine splittings. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2011 ; Vol. 83, No. 3.
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