Semileptonic B -meson decays to light pseudoscalar mesons on the HISQ ensembles

Zechariah Gelzer, C. Bernard, C. De Tar, Ax El-Khadra, E. Gámiz, Steven Gottlieb, Andreas S. Kronfeld, Yuzhi Liu, Y. Meurice, J. N. Simone, William D Toussaint, R. S.Van De Water, R. Zhou

Research output: Contribution to journalConference article

7 Scopus citations

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.

Original languageEnglish (US)
Article number13024
JournalEPJ Web of Conferences
Volume175
DOIs
StatePublished - Mar 26 2018
Event35th International Symposium on Lattice Field Theory, Lattice 2017 - Granada, Spain
Duration: Jun 18 2017Jun 24 2017

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Gelzer, Z., Bernard, C., Tar, C. D., El-Khadra, A., Gámiz, E., Gottlieb, S., Kronfeld, A. S., Liu, Y., Meurice, Y., Simone, J. N., Toussaint, W. D., Water, R. S. V. D., & Zhou, R. (2018). Semileptonic B -meson decays to light pseudoscalar mesons on the HISQ ensembles. EPJ Web of Conferences, 175, [13024]. https://doi.org/10.1051/epjconf/201817513024