TY - JOUR
T1 - B-meson semileptonic decays with highly improved staggered quarks
AU - Fermilab Lattice and MILC Collaborations
AU - Lytle, Andrew
AU - DeTar, Carleton
AU - El-Khadra, Aida
AU - Gámiz, Elvira
AU - Gottlieb, Steven
AU - Jay, William
AU - Kronfeld, Andreas
AU - Simone, James
AU - Vaquero, Alejandro
N1 - Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).
PY - 2023/4/6
Y1 - 2023/4/6
N2 - We present an update of the Fermilab Lattice and MILC Collaborations project to compute the form factors for semileptonic B(s)-meson decays. Our calculation uses the highly improved staggered quark (HISQ) action for sea and valence quarks, and ensembles with up, down, strange, and charm quarks in the sea. Using a highly improved action with the MILC Collaboration's gauge ensembles with lattice spacings down to a ≈ 0.03 fm, allows the heavy valence quarks to be treated with the same discretization as the light and strange quarks. This unified treatment of the valence quarks allows for absolutely normalized vector currents, bypassing the need for perturbative matching, which has been a source of uncertainty in previous calculations of B-meson decay form factors by our collaboration. All preliminary form-factor results are blinded.
AB - We present an update of the Fermilab Lattice and MILC Collaborations project to compute the form factors for semileptonic B(s)-meson decays. Our calculation uses the highly improved staggered quark (HISQ) action for sea and valence quarks, and ensembles with up, down, strange, and charm quarks in the sea. Using a highly improved action with the MILC Collaboration's gauge ensembles with lattice spacings down to a ≈ 0.03 fm, allows the heavy valence quarks to be treated with the same discretization as the light and strange quarks. This unified treatment of the valence quarks allows for absolutely normalized vector currents, bypassing the need for perturbative matching, which has been a source of uncertainty in previous calculations of B-meson decay form factors by our collaboration. All preliminary form-factor results are blinded.
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M3 - Conference article
AN - SCOPUS:85153178031
SN - 1824-8039
VL - 430
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 418
T2 - 39th International Symposium on Lattice Field Theory, LATTICE 2022
Y2 - 8 August 2022 through 13 August 2022
ER -