B-Bbar Mixing and Matching with Fermilab Heavy Quarks
classification
✦ hep-lat
hep-ph
keywords
matchingquarksfermilabheavyb-bbarbreakingcalculationscarried
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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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