Heavy-heavy current improvement for calculation of B →d(z.ast;)ℓ ν semi-leptonic form factors using the Oktay-Kronfeld action

Jon A. Bailey, Jaehoon Leem, Weonjong Lee, Yong Chull Jang

Research output: Contribution to journalConference articlepeer-review

Abstract

Lattice calculations of the form factors for B → D(z.ast;)ℓ ν decays can be used to extract the CKM matrix element |Vcb|. The Oktay-Kronfeld action is a highly improved version of the Fermilab action, which systematically reduces heavy quark discretization effects through O(λ3) in HQET power counting, for heavy-light meson quantities. To calculate B → D(z.ast;)ℓ ν semi-leptonic form factors using Oktay-Kronfeld heavy quarks, we need to improve the heavy quark currents to the same level. We report our progress in calculating the improvement coefficients for currents composed of bottom and charm quarks. Our results presented in this paper are preliminary.

Original languageEnglish
JournalProceedings of Science
VolumePart F128557
Publication statusPublished - 2016
Event34th Annual International Symposium on Lattice Field Theory, LATTICE 2016 - Southampton, United Kingdom
Duration: 2016 Jul 242016 Jul 30

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All Science Journal Classification (ASJC) codes

  • General

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