 Award ID(s):
 1719626
 NSFPAR ID:
 10093396
 Date Published:
 Journal Name:
 13th Conference on the Intersections of Particle and Nuclear Physics
 Volume:
 arXiv:1810.00250
 Format(s):
 Medium: X
 Sponsoring Org:
 National Science Foundation
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We present results for B(s) and D(s)meson semileptonic decays from ongoing calculations by the Fermilab Lattice and MILC Collaborations. Our calculation employs the highly improved stag gered quark (HISQ) action for both sea and valence quarks and includes several ensembles with physicalmass up, down, strange, and charm quarks and lattice spacings ranging from a ≈ 0.15 fm down to 0.06 fm. At most lattice spacings, an ensemble with physicalmass light quarks is included. The use of the highly improved action, combined with the MILC Collaboration’s gauge ensembles with lattice spacings down to a ≈ 0.042 fm, allows heavy valence quarks to be treated with the same discretization as the light and strange quarks. This unified treatment of the valence quarks allows (in some cases) for absolutely normalized currents, bypassing the need for perturbative matching, which has been a leading source of uncertainty in previous calculations of Bmeson decay form factors by our collaboration. All preliminary formfactor results are blinded.more » « less

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