A determination of the B_s^0 and B_d^0 mixing parameters in 2+1 lattice QCD

Abstract

We report on the advances in our unquenched calculation of the matrix elements relevant for the analysis of B^0-\bar B^0 mixing using the Asqtad (light quark) and Fermilab (heavy quark) actions. We have calculated the hadronic parameters for the mass and width differences in the neutral B meson system. Preliminary results are presented for f_{B_q}^2 B_q as well as for the ratio ξ^2=f_{B_s}^2 B_{B_s}/f_{B_d}^2 B_{B_d}.

7 pages, talk at The XXV International Symposium on Lattice Field Theory, July 30 - August 4 2007, Regensburg, Germany

References in corpus (6)

• Light pseudoscalar decay constants, quark masses, and low energy constants from three-flavor lattice QCD
• Direct Limits on the Bs Oscillation Frequency
• Charmed meson decay constants in three-flavor lattice QCD
• Staggered Chiral Perturbation Theory for Heavy-Light Mesons
• $B_s^0-\overline{B_s^0}$ Mixing Parameters from Unquenched Lattice QCD
• Matrix elements of the complete set of ΔB = 2 and ΔC = 2 operators in heavy meson chiral perturbation theory

Cited by in corpus (3)

• Full nonperturbative QCD simulations with 2+1 flavors of improved staggered quarks
• B-Bbar Mixing and Matching with Fermilab Heavy Quarks
• Lattice QCD and Flavour Physics