PoS - Proceedings of Science
Volume 453 - The 40th International Symposium on Lattice Field Theory (LATTICE2023) - Quark and Lepton Flavor Physics
B-meson semileptonic decays from highly improved staggered quarks
A. Lytle*, C. DeTar, E. Gámiz, S. Gottlieb, W. Jay, A.X. El-Khadra, A. Kronfeld, J. Laiho, J.N. Simone and A. Vaquero
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Pre-published on: May 04, 2024
Published on: —
Abstract
We present an update for results on B-meson semileptonic decays using the highly improved staggered quark (HISQ) action for both valence and 2+1+1 sea quarks. The use of the highly improved
action, combined with the MILC collaboration’s gauge ensembles with lattice spacings down to $\sim$0.03
fm, allows the $b$ quark to be treated with the same discretization as the lighter quarks. The talk will
focus on updated results for $B_{(s)} \to D_{(s)}$, $B_{(s)} \to K$ scalar and vector form factors.
DOI: https://doi.org/10.22323/1.453.0240
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