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Report number	arXiv:2402.14924 ; FERMILAB-CONF-24-0077-T
Title	Form factors for semileptonic B-decays with HISQ light quarks and clover b-quarks in Fermilab interpretation
Author(s)	Jeong, Hwancheol (Indiana U.) ; DeTar, Carleton (Utah U.) ; El-Khadra, Aida X. (Tata Inst. ; Bielefeld U. ; CERN ; Kaiserslautern U. ; Illinois U., Urbana) ; Gámiz, Elvira (CAFPE, Granada ; Granada U., Theor. Phys. Astrophys.) ; Gelzer, Zechariah (Tata Inst. ; Bielefeld U. ; CERN ; Kaiserslautern U. ; Illinois U., Urbana) ; Gottlieb, Steven (Indiana U.) ; Jay, William (MIT, Cambridge, CTP) ; Kronfeld, Andreas (Fermilab) ; Lytle, Andrew (Tata Inst. ; Bielefeld U. ; CERN ; Kaiserslautern U. ; Illinois U., Urbana) ; Vaquero, Alejandro (Zaragoza U.)
Publication	2024-05-04
Imprint	2024-02-22
Number of pages	9
Note	10 pages, 5 figures, proceedings of the 40th International Symposium on Lattice Field Theory (Lattice 2023), July 31 - August 4, 2023, Fermilab, USA
In:	PoS LATTICE2023 (2024) pp.253
In:	40th International Symposium on Lattice Field Theory (Lattice 2023), Fermilab, Batavia, IL, United States, 30 Jul - 5 Aug 2023, pp.253
DOI	10.22323/1.453.0253
Subject category	hep-lat ; Particle Physics - Lattice
Abstract	We compute the vector, scalar, and tensor 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 bottom quark is described by the 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 blinded preliminary results for the form factors.
Copyright/License	publication: © 2024 The Authors (License: CC-BY-NC-ND-4.0) preprint: (License: CC BY-NC-ND 4.0)

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