Kaon semileptonic decays with Nf = 2+1+1 HISQ fermions and physical light-quark masses

E. Gámiz, A. Bazavov, C. Bernard, C. DeTar, D. Du, A. X. El-Khadra, E. D. Freeland, Steven Gottlieb, U. M. Heller, J. Komijani, A. S. Kronfeld, J. Laiho, P. B. Mackenzie, E. T. Neil, T. Primer, J. N. Simone, R. Sugar, D. Toussaint, R. S. Van De Water, Ran Zhou

Research output: Contribution to journalConference articlepeer-review


We discuss the reduction of errors in the calculation of the form factor f + (0) with HISQ fermions on the Nf = 2+1+1 MILC configurations from increased statistics on some key ensembles, new data on ensembles with lattice spacings down to 0:042 fm and the study of finite-volume effects within staggered ChPT. We also study the implications for the unitarity of the CKM matrix in the first row and for current tensions with leptonic determinations of |Vus|.

Original languageEnglish (US)
JournalProceedings of Science
VolumePart F128557
StatePublished - 2016
Event34th Annual International Symposium on Lattice Field Theory, LATTICE 2016 - Southampton, United Kingdom
Duration: Jul 24 2016Jul 30 2016

ASJC Scopus subject areas

  • General


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