Form factors for B to Kll semileptonic decay from three-flavor lattice QCD

Ran Zhou, Jon A. Bailey, Alexei Bazavov, Aida X. El-Khadra, Steven Gottlieb, Rajendra D. Jain, Andreas S. Kronfeld, Ruth S. Van de Water

Research output: Contribution to journalConference articlepeer-review


We study the B → Kl+l semileptonic decay process in three-flavor lattice QCD. We analyze several ensembles generated by the MILC collaboration at different lattice spacings and sea-quark masses. We use the asqtad improved staggered action for the light quarks and the clover action with the Fermilab interpretation for the heavy b quark. We present preliminary results for the vector current induced form factors for a range of kaon energies. Our analysis includes chiral and continuum extrapolations based on SU(2) staggered χPT .

Original languageEnglish
JournalProceedings of Science
Publication statusPublished - 2011
Event29th International Symposium on Lattice Field Theory, Lattice 2011 - Squaw Valley, Lake Tahoe, United States
Duration: 2011 Jul 102011 Jul 16

Bibliographical note

Funding Information:
We thank Claude Bernard and Jack Laiho for helpful discussions on SχPT. We also thank James Simone for the help on the renormalization constants. Computations for this work were carried out with resources provided by the USQCD Collaboration, the Argonne Leadership Computing Facility, the National Energy Research Scientific Computing Center, and the Los Alamos National Laboratory, which are funded by the Office of Science of the U.S. Department of Energy; and with resources provided by the National Institute for Computational Science, the Pittsburgh Supercomputer Center, the San Diego Supercomputer Center, and the Texas Advanced Computing Center, which are funded through the National Science Foundation’s Teragrid/XSEDE Program. This work was supported in part by the U.S. Department of Energy under Grants No. DE-FG02-91ER40661 (S.G., R.Z.), No. DE-FG02-91ER40677 (R.D.J., A.X.K.). This manuscript has been co-authored by employees of Brookhaven Science Associates, LLC, under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. R.S.V. acknowledges support from BNL via the Goldhaber Distinguished Fellowship. Fermilab is operated by Fermi Research Alliance, LLC, under Contract No. DE-AC02-07CH11359 with the United States Department of Energy.

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All Science Journal Classification (ASJC) codes

  • General


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