We present an update on the calculation of B¯ →D∗`ν¯ semileptonic form factor at zero recoil using the Oktay-Kronfeld bottom and charm quarks on Nf = 2+1+1 flavor HISQ ensembles generated by the MILC collaboration. Preliminary results are given for two ensembles with a ≈ 0.12 and 0.09 fm and Mπ ≈310 MeV. Calculations have been done with a number of valence quark masses, and the dependence of the form factor on them is investigated on the a ≈ 0.12 fm ensemble. The excited state is controlled by using multistate fits to the three-point correlators measured at 4–6 source-sink separations.
|Journal||Proceedings of Science|
|Publication status||Published - 2018|
|Event||36th Annual International Symposium on Lattice Field Theory, LATTICE 2018 - East Lansing, United States|
Duration: 2018 Jul 22 → 2018 Jul 28
Bibliographical noteFunding Information:
collaboration, which are funded by the Office of Science of the U.S. Department of Energy, and (ii) the DAVID GPU clusters at Seoul National University. 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 acknowledges support from the KISTI supercomputing center through the strategic support program for the supercomputing application research (No. KSC-2016-C3-0072).
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