Tuning Fermilab Heavy Quarks in 2 1 Flavor Lattice QCD with Application to Hyperfine Splittings - High Energy Physics - LatticeReportar como inadecuado




Tuning Fermilab Heavy Quarks in 2 1 Flavor Lattice QCD with Application to Hyperfine Splittings - High Energy Physics - Lattice - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: We report the non-perturbative tuning of parameters- kappa c, kappa b, andkappa crit -that determine the heavy-quark mass in the Fermilab action. Thisrequires the computation of the masses of Ds^* and Bs^* mesons comprised ofa Fermilab heavy quark and a staggered light quark. Additionally, we report thehyperfine splittings for Ds and Bs mesons as a cross-check of our simulationand analysis methods. We find a splitting of 145 +- 15 MeV for the Ds systemand 40 +- 9 MeV for the Bs system. These are in good agreement with theParticle 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 gaugeconfigurations at three lattice spacings $a$ approximately 0.15, 0.12, and 0.09fm.



Autor: 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. Hetr

Fuente: https://arxiv.org/







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