31 July 2023 to 4 August 2023
America/Chicago timezone

Form factors for semileptonic B-decays with HISQ light quarks and clover b-quarks in Fermilab interpretation

31 Jul 2023, 14:10
20m
Hornets' Nest (WH8X)

Hornets' Nest

WH8X

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

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)

Presentation materials