B-Bbar Mixing and Matching with Fermilab Heavy Quarks

Richard Todd Evans; Elvira Gamiz; Aida El-Khadra; Andreas Kronfeld

B-Bbar Mixing and Matching with Fermilab Heavy Quarks

High Energy Physics - Lattice 2010-11-05 v1 High Energy Physics - Phenomenology

Authors: Richard Todd Evans , Elvira Gamiz , Aida El-Khadra , Andreas Kronfeld

Abstract

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.

Keywords

B-Bbar mixing fermilab heavy quarks staggered fermions 4-quark operator matching SU(3)-breaking ratio

Cite

@article{arxiv.0911.5432,
  title  = {B-Bbar Mixing and Matching with Fermilab Heavy Quarks},
  author = {Richard Todd Evans and Elvira Gamiz and Aida El-Khadra and Andreas Kronfeld},
  journal= {arXiv preprint arXiv:0911.5432},
  year   = {2010}
}

Comments

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

B-Bbar Mixing and Matching with Fermilab Heavy Quarks

Abstract

Keywords

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