The CKM matrix element |Vcb| can be extracted by combining data from experiments with lattice QCD results for the semileptonic form factors for the B̄ → D(∗)lv̄ decays. The Oktay-Kronfeld (OK) action was designed to reduce heavy-quark discretization errors to below 1%, or through O(λ3) in HQET power counting. Here we describe recent progress on bottom-to-charm currents improved to the same order in HQET as the OK action, and correct formerly reported results of our matching calculations, in which the operator basis was incomplete.
|Journal||EPJ Web of Conferences|
|Publication status||Published - 2018 Mar 26|
|Event||35th International Symposium on Lattice Field Theory, Lattice 2017 - Granada, Spain|
Duration: 2017 Jun 18 → 2017 Jun 24
Bibliographical noteFunding Information:
The research of W. Lee is supported by the Creative Research Initiatives Program (No. 2017013332) of the NRF grant funded by the Korean government (MEST). W. Lee would like to acknowledge the support from the KISTI supercomputing center through the strategic support program for the supercomputing application research (No. KSC-2015-G2-002). Computations were carried out on the DAVID clusters at Seoul National University. 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. 2015024974).
© The Authors, published by EDP Sciences, 2018.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)