Form factors for semi-leptonic B decays

Ran Zhou, Steven Gottlieb, Jon A. Bailey, Daping Du, Aida X. El-Khadra, R. D. Jain, Andreas S. Kronfeld, Ruth S. Van De Water, Yuzhi Liu, Yannick Meurice

Research output: Contribution to journalConference article


We report on form factors for the B → Kl+l- semi-leptonic decay process. We use several lattice spacings from a = 0.12 fm down to 0.06 fm and a variety of dynamical quark masses with 2+1 flavors of asqtad quarks provided by the MILC Collaboration. These ensembles allow good control of the chiral and continuum extrapolations. The b-quark is treated as a clover quark with the Fermilab interpretation. We update our results for fk and f, or, equivalently, f+ and f0. In addition, we present new results for the tensor form factor fT . Model independent results are obtained based upon the z-expansion.

Original languageEnglish (US)
Article number105
JournalProceedings of Science
VolumePart F130497
StatePublished - Jan 1 2012
Event30th International Symposium on Lattice Field Theory, Lattice 2012 - Cairns, Australia
Duration: Jun 24 2012Jun 29 2012

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of 'Form factors for semi-leptonic B decays'. Together they form a unique fingerprint.

  • Cite this

    Zhou, R., Gottlieb, S., Bailey, J. A., Du, D., El-Khadra, A. X., Jain, R. D., Kronfeld, A. S., Van De Water, R. S., Liu, Y., & Meurice, Y. (2012). Form factors for semi-leptonic B decays. Proceedings of Science, Part F130497, [105].