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arXiv · 1211.2247

Semileptonic B to D decays at nonzero recoil with 2+1 flavors of improved staggered quarks. An update

Si-Wei Qiu·Carleton DeTar·Daping Du·Andreas S. Kronfeld·Jack Laiho·Ruth Van de Water
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Abstract

The Fermilab Lattice and MILC collaborations are completing a comprehensive program of heavy-light physics on MILC (2+1)-flavor asqtad ensembles with lattice spacings as small as 0.045 fm and light-to-strange-quark mass ratios as low as 1/20. We use the Fermilab interpretation of the clover action for heavy valence quarks and the asqtad action for the light valence quarks. The central goal of the program is to provide ever more exacting tests of the unitarity of the CKM matrix. We present preliminary results for one part of the program, namely the analysis of the semileptonic decay B -> D l nu at nonzero recoil.

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Si-Wei Qiu, Carleton DeTar, Daping Du, Andreas S. Kronfeld, Jack Laiho, Ruth Van de Water. 2012-11-09. Semileptonic B to D decays at nonzero recoil with 2+1 flavors of improved staggered quarks. An update. https://arxiv.org/abs/1211.2247

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