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

Journal Article · Tue Feb 01 04:00:00 EST 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.034503· OSTI ID:21504899

Bernard, C; Freeland, E D ^[1]; DeTar, C; Levkova, L ^[2]; Di Pierro, M ^[3]; El-Khadra, A X ^[4]; Evans, R T ^[4]; Gamiz, E ^[4]; Gottlieb, Steven ^[5]; Heller, U M ^[6]; Hetrick, J E ^[7]; Kronfeld, A S; Mackenzie, P B; Simone, J N ^[8]; Laiho, J ^[1]; Sugar, R ^[9]; Toussaint, D ^[10]; Van de Water, R S ^[11]

---

1. Department of Physics, Washington University, St. Louis, Missouri 63130 (United States)
2. Physics Department, University of Utah, Salt Lake City, Utah 84112 (United States)
3. School of Computing, DePaul University, Chicago, Illinois 60604 (United States)
4. Physics Department, University of Illinois, Urbana, Illinois 61801 (United States)
5. Department of Physics, Indiana University, Bloomington, Indiana 47405 (United States)
6. American Physical Society, One Research Road, Ridge, New York 11961 (United States)
7. Physics Department, University of the Pacific, Stockton, California 95211 (United States)
8. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
9. Department of Physics, University of California, Santa Barbara, California 93106 (United States)
10. Department of Physics, University of Arizona, Tucson, Arizona 85721 (United States)
11. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)

We report the nonperturbative tuning of parameters - {kappa}{sub c}, {kappa}{sub b}, and {kappa}{sub crit} - that are related to the bare heavy-quark mass in the Fermilab action. This requires the computation of the masses of D{sub s}{sup (*)} and B{sub s}{sup (*)} mesons comprised of a Fermilab heavy quark and a staggered light quark. Additionally, we report the hyperfine splittings for D{sub s}{sup (*)} and B{sub s}{sup (*)} mesons as a cross-check of our simulation and analysis methods. We find a splitting of 145{+-}15 MeV for the D{sub s} system and 40{+-}9 MeV for the B{sub s} 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{approx_equal}0.15, 0.12, and 0.09 fm.

• OSTI ID: 21504899
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 83; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B S MESONS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
CALCULATION METHODS
CHARM PARTICLES
CHARMED MESONS
COMPOSITE MODELS
CONFIGURATION
CONSTRUCTIVE FIELD THEORY
D S MESONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMILAB
FERMIONS
FIELD THEORIES
FLAVOR MODEL
HADRONS
LATTICE FIELD THEORY
MASS
MATHEMATICAL MODELS
MESONS
MEV RANGE
MEV RANGE 100-1000
NATIONAL ORGANIZATIONS
PARTICLE MODELS
PARTICLES
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
QUARKS
SIMULATION
STRANGE MESONS
STRANGE PARTICLES
US DOE
US ORGANIZATIONS