B-Bbar Mixing and Matching with Fermilab Heavy Quarks

Details B-Bbar Mixing and Matching with Fermilab Heavy Quarks B-Bbar Mixing and Matching with Fermilab Heavy Quarks

2009-11-28

arxiv.org/abs/0911.5432v1

PoS LAT2009:245,2009

Physics

High Energy Physics

High Energy Physics - Lattice

7 pp., 2 plots in 1 figure. Prepared for Lattice 2009, 26-31 July 2009, Beijing, China. To appear as PoS LATTICE 2009, 245 (20

Scientific paper

We discuss the matching procedure for heavy-light 4-quark operators using the Fermilab method for heavy quarks and staggered fermions for light quarks. These ingredients enable us to construct the continuum-limit operator needed to determine the oscillation frequency of neutral B mesons. The matching is then carried out at the one-loop level. We also present an updated preliminary result for the SU(3)-breaking ratio \xi, based on calculations using the MILC Collaboration's ensembles of lattice gauge fields.

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