Kaon semileptonic form factors with Nf = 2+1+1 HISQ fermions and physical light quark masses

E. Gámiz, A. Bazavov, C. Bernard, C. Bouchard, C. Detar, D. Du, A. X. El-Khadra, J. Foley, E. D. Freeland, Steven Gottlieb, U. M. Heller, J. Kim, A. S. Kronfeld, J. Laiho, L. Levkova, P. B. Mackenzie, E. T. Neilk, M. B. Oktay, Si Wei Qiu, J. N. SimoneR. Sugar, D. Toussaint, R. S. Van De Water, Ran Zhou

Research output: Contribution to journalConference Articlepeer-review

2 Scopus citations

Abstract

We present results for the form factor f+Kπ (0), needed to extract the CKM matrix element jVusj from experimental data on semileptonic K decays, on the HISQ Nf = 2+1+1 MILC configurations. The HISQ action is also used for the valence sector. The data set used for our final result includes three different values of the lattice spacing and data at the physical light quark masses. We discuss the error budget and how this calculation improves on our previous determination of f+Kπ (0) on the asqtad Nf = 2+1 MILC configurations.

Original languageEnglish (US)
Article number395
JournalProceedings of Science
Volume29-July-2013
StatePublished - 2013
Event31st International Symposium on Lattice Field Theory, LATTICE 2013 - Mainz, Germany
Duration: Jul 29 2013Aug 3 2013

ASJC Scopus subject areas

  • General

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