Abstract

We report the status of an ongoing lattice-QCD calculation of form factors for exclusive semileptonic decays of B mesons with both charged currents (B → πlv, Bs → Klv) and neutral currents (B → πl+l-, B → Kl+l-). The results are important for constraining or revealing physics beyond the Standard Model. This work uses MILC’s (2+1 + 1)-flavor ensembles with the HISQ action for the sea and light valence quarks and the clover action in the Fermilab interpretation for the b quark. Simulations are carried out at three lattice spacings down to 0.088 fm, with both physical and unphysical sea-quark masses. We present preliminary results for correlation-function fits.

Details

Title
Semileptonic B-meson decays to light pseudoscalar mesons on the HISQ ensembles
Author
Gelzer, Zechariah; Bernard, C; De Tar, C; El-Khadra, A X; Gámiz, E; Gottlieb, Steven; Kronfeld, Andreas S; Liu, Yuzhi; Meurice, Y; Simone, J N; Toussaint, D; RS Van de Water; Zhou, R
Section
13 Weak Decays and Matrix Elements
Publication year
2018
Publication date
2018
Publisher
EDP Sciences
ISSN
21016275
e-ISSN
2100014X
Source type
Conference Paper
Language of publication
English
DOI
https://doi.org/10.1051/epjconf/201817513024
ProQuest document ID
2050825545
Copyright
© 2018. This work is licensed under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and conditions, you may use this content in accordance with the terms of the License.