EPJ Web Conf.
Volume 175, 201835th International Symposium on Lattice Field Theory (Lattice 2017)
|Number of page(s)||8|
|Section||13 Weak Decays and Matrix Elements|
|Published online||26 March 2018|
Semileptonic B-meson decays to light pseudoscalar mesons on the HISQ ensembles
Department of Physics, University of Illinois, Urbana, IL 61801, USA
2 Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242, USA
3 Department of Physics, Washington University, St. Louis, Missouri, 63130, USA
4 Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112, USA
5 Fermi National Accelerator Laboratory, Batavia, Illinois, USA
6 CAFPE and Departamento de Física Teórica y del Cosmos, Universidad de Granada, Granada, Spain
7 Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
8 Institute for Advanced Study, Technische Universität München, D-85748 Garching, Germany
9 Department of Physics, University of Arizona, Tucson, Arizona 85721, USA
Published online: 26 March 2018
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.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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