B-meson semileptonic form factors on (2+1+1)-flavor HISQ ensembles
Author
Gelzer, Z.DeTar, C.
El-Khadra, A.X.
Gámiz, E.
Gottlieb, S.
Kronfeld, A.S.
Liu, Y.
Meurice, Y.
Simone, J.N.
Toussaint, D.
van de Water, R.S.
Fermilab Collaboration
Lattice Collaboration
MILC Collaboration
Affiliation
Department of Physics, University of ArizonaIssue Date
2019
Metadata
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Sissa Medialab SrlCitation
Gelzer, Z., DeTar, C., El-Khadra, A. X., Gámiz, E., Gottlieb, S., Kronfeld, A. S., ... & Van de Water, R. S. (2019). $ B $-meson semileptonic form factors on (2+ 1+ 1)-flavor HISQ ensembles. In 37th International Symposium on Lattice Field Theory. 16-22 June 2019. Wuhan.Journal
Proceedings of ScienceRights
Copyright © owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
We report updates to an ongoing lattice-QCD calculation of the form factors for the semileptonic decays B → π`ν, Bs → K`ν, B → π`+`−, and B → K`+`−. The tree-level decays B(s) → π(K)`ν enable precise determinations of the CKM matrix element |Vub|, while the flavor-changing neutral-current interactions B → π(K)`+`− are sensitive to contributions from new physics. This work uses MILC's (2+1+1)-flavor HISQ ensembles at approximate lattice spacings between 0.057 and 0.15 fm, with physical sea-quark masses on four out of the seven ensembles. The valence sector is comprised of a clover b quark (in the Fermilab interpretation) and HISQ light and s quarks. We present preliminary results for the form factors f0, f+, and fT, including studies of systematic errors. © 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).Note
Open access journalISSN
1824-8039Version
Final published versionCollections
Except where otherwise noted, this item's license is described as Copyright © owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.