Speaker
Hwancheol Jeong
(Indiana University)
Description
We compute the complete set of form factors for the $B\to \pi$, $B\to K$, and $B_s\to K$ amplitudes, which are needed to describe semileptonic $B$-meson decay rates for both the charged and neutral current cases. We use the highly improved staggered quark (HISQ) action for the sea and light valence quarks. The b quark is described by the Wilson-clover action in the Fermilab interpretation. Simulations are carried out on $N_f = 2+1+1$ MILC HISQ ensembles at approximate lattice spacings from 0.15 fm down to 0.057 fm. We present preliminary results for the form factors.
| Topical area | Quark and Lepton Flavor Physics |
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Primary authors
Aida El-Khadra
(University of Illinois at Urbana-Champaign)
Alejandro Vaquero
(University of Utah)
Andreas Kronfeld
(Fermilab)
Andrew Lytle
(University of Illinois at Urbana-Champaign)
Carleton DeTar
(University of Utah)
Elvira Gamiz
(University of Granada)
Hwancheol Jeong
(Indiana University)
Steven Gottlieb
(Indiana Univ.)
William Jay
(MIT)
Zechariah Gelzer
(University of Illinois at Urbana--Champaign)