B → Dl v at non-zero recoil

We present preliminary results from our analysis of the form factors for the B → D*l v decay at non-zero recoil. Our analysis includes 15 MILC asqtad ensembles with N f = 2 + 1 flavors of sea quarks and lattice spacings ranging from a ≈ 0.15 fm down to 0.045 fm. The valence light quarks employ the a...

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Published inEPJ Web of conferences Vol. 175; p. 13003
Main Authors Avilés-Casco, Alejandro Vaquero, DeTar, Carleton, Du, Daping, El-Khadra, Aida, Kronfeld, Andreas, Laiho, John, Van de Water, Ruth S.
Format Journal Article
LanguageEnglish
Published 2018
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Summary:We present preliminary results from our analysis of the form factors for the B → D*l v decay at non-zero recoil. Our analysis includes 15 MILC asqtad ensembles with N f = 2 + 1 flavors of sea quarks and lattice spacings ranging from a ≈ 0.15 fm down to 0.045 fm. The valence light quarks employ the asqtad action, whereas the heavy quarks are treated using the Fermilab action. We conclude with a discussion of future plans and phenomenological implications. When combined with experimental measurements of the decay rate, our calculation will enable a determination of the CKM matrix element | V cb |.
ISSN:2100-014X
2100-014X
DOI:10.1051/epjconf/201817513003