Radiative corrections to the m(oving)NRQCD action and heavy-light operators

Eike H. Müller, Christine T.H. Davies, Alistair Hart, Georg M. Von Hippel, Ron R. Horgan, Iain Kendall, Andrew Lee, Stefan Meinel, Chris Monahan, Matthew Wingate

Research output: Contribution to journalConference articlepeer-review

Abstract

Rare decays of B mesons, such as BπK-and BπK()+- are loop suppressed in the Standard Model and sensitive to new physics. The final state meson in heavy-light decays at large recoil has sizeable momentum in the rest frame of the decaying meson. To reduce the resulting discretization errors we formulate the nonrelativistic heavy quark action in a moving frame. We discuss the perturbative renormalization of the leading order heavy-light operators in the resulting theory which is known as m(oving)NRQCD. We also present radiative corrections to the NRQCD action computed using automated lattice perturbation theory. By combining this technique with high-beta simulations in the weak coupling regime of the theory higher order loop corrections can be calculated very efficiently.

Original languageEnglish (US)
JournalProceedings of Science
Volume91
StatePublished - Jan 1 2009
Externally publishedYes
Event27th International Symposium on Lattice Field Theory, LAT 2009 - Beijing, China
Duration: Jul 26 2009Jul 31 2009

ASJC Scopus subject areas

  • General

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