Neutral B mixing from 2 + 1 flavor lattice QCD: The standard model and beyond

C. M. Bouchard, E. D. Freeland, C. Bernard, A. X. El-Khadra, E. Gámiz, A. S. Kronfeld, J. Laiho, R. S. Van de Water

Research output: Contribution to journalConference article

3 Scopus citations

Abstract

We report on the status of our lattice-QCD calculation of the hadronic contribution to B0 d and B0 s mixing, with 2 + 1 flavors of dynamical sea quarks. Preliminary results for hadronic mixing matrix elements are given for a basis of five four-quark, dimension-six, ∆B = 2 mixing operators that spans the space of all possible hadronic mixing contributions in the Standard Model and beyond. At the intermediate stage of analysis reported on in this work, our errors are competitive with published Standard Model matrix element results. For beyond the Standard Model matrix elements, this is the first unquenched calculation and the first new lattice-QCD calculation in ten years.

Original languageEnglish (US)
JournalProceedings of Science
Volume139
StatePublished - Jan 1 2011
Externally publishedYes
Event29th International Symposium on Lattice Field Theory, Lattice 2011 - Squaw Valley, Lake Tahoe, United States
Duration: Jul 10 2011Jul 16 2011

ASJC Scopus subject areas

  • General

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    Bouchard, C. M., Freeland, E. D., Bernard, C., El-Khadra, A. X., Gámiz, E., Kronfeld, A. S., Laiho, J., & Van de Water, R. S. (2011). Neutral B mixing from 2 + 1 flavor lattice QCD: The standard model and beyond. Proceedings of Science, 139.