TY - JOUR
T1 - Radiative corrections to the m(oving)NRQCD action and heavy-light operators
AU - Müller, Eike H.
AU - Davies, Christine T.H.
AU - Hart, Alistair
AU - Von Hippel, Georg M.
AU - Horgan, Ron R.
AU - Kendall, Iain
AU - Lee, Andrew
AU - Meinel, Stefan
AU - Monahan, Chris
AU - Wingate, Matthew
N1 - Funding Information:
We would like to thank Lew Khomskii, Zhaofeng Liu and Junko Shigemitsu for useful discussions. This work has made use of the resources provided by the Edinburgh Compute and Data Facility (ECDF) and the Cambridge High Performance Computing Service. The ECDF is partially supported by the eDIKT initiative. We also acknowledge support from the DEISA Extreme Computing Initiative (DECI).
Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
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M3 - Conference article
AN - SCOPUS:85055262870
SN - 1824-8039
VL - 91
JO - Proceedings of Science
JF - Proceedings of Science
T2 - 27th International Symposium on Lattice Field Theory, LAT 2009
Y2 - 26 July 2009 through 31 July 2009
ER -