B^0_s and B^0 Mixing in the Standard Model and Beyond: A Progress Report

C. Bouchard; A. X. El-Khadra; E. D. Freeland; E. Gamiz; A. S. Kronfeld

B^0_s and B^0 Mixing in the Standard Model and Beyond: A Progress Report

High Energy Physics - Lattice 2011-05-18 v2 High Energy Physics - Phenomenology

Authors: C. Bouchard , A. X. El-Khadra , E. D. Freeland , E. Gamiz , A. S. Kronfeld

Abstract

We give a progress report on the calculation of B meson mixing matrix elements, focusing on contributions that could arise beyond the Standard Model. The calculation uses asqtad (light quark) and Fermilab (heavy quark) valence actions and MILC ensembles with 2+1 flavors of asqtad sea quarks. We report preliminary B^0_s fit results, at a lattice spacing of 0.12 fm, for the SUSY basis of effective four-quark mixing operators and include an estimate for the final error budget.

Keywords

B meson mixing lattice QCD Standard Model asqtad action MILC ensembles

Cite

@article{arxiv.1011.2570,
  title  = {B^0_s and B^0 Mixing in the Standard Model and Beyond: A Progress Report},
  author = {C. Bouchard and A. X. El-Khadra and E. D. Freeland and E. Gamiz and A. S. Kronfeld},
  journal= {arXiv preprint arXiv:1011.2570},
  year   = {2011}
}

Comments

2 references added to introduction. 7 pages, 4 figures, Presented at the XXVIII International Symposium on Lattice Field Theory June 14-19, 2010, Villasimius, Sardinia Italy

B^0_s and B^0 Mixing in the Standard Model and Beyond: A Progress Report

Abstract

Keywords

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