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.
|Journal||Proceedings of Science|
|Publication status||Published - 2014|
|Event||32nd International Symposium on Lattice Field Theory, LATTICE 2014 - New York, United States|
Duration: 2014 Jun 23 → 2014 Jun 28
Bibliographical noteFunding 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].
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