Improved currents for B → D(∗)lv form factors from Oktay-Kronfeld heavy quarks

SWME Collaboration

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1 Citation (Scopus)


The CKM matrix element | Vcb | can be extracted by combining experimentally determined branching fractions for B → D(∗)lvdecays with form factors from the lattice. While successful, the precision of this approach has been limited by heavy-quark discretization effects. An improved version of the Fermilab action, the Oktay-Kronfeld action, can be used to reduce heavy-quark discretization effects in calculations performed at the physical bottom and charm quark masses. Treating charm and bottom quarks as massive, we are carrying out improvement of the flavorchanging currents through third order in the momentum (HQET) expansion.

Original languageEnglish
Article number389
JournalProceedings of Science
VolumePart F130500
Publication statusPublished - 2014
Event32nd International Symposium on Lattice Field Theory, LATTICE 2014 - New York, United States
Duration: 2014 Jun 232014 Jun 28

Bibliographical note

Funding Information:
J.A.B. is supported by the Basic Science Research Program of the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. 2014027937). The research of W. Lee is supported by the Creative Research Initiatives Program (No. 2014001852) of the NRF grant funded by the Korean government (MEST). W. Lee would like to acknowledge support from KISTI supercomputing center through the strategic support program for the supercomputing application research [No. KSC-2013-G2-005].

Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

All Science Journal Classification (ASJC) codes

  • General


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