Kl3 form factor with Nf 2 +1 dynamical domain wall fermions

P. A. Boyle, J. M. Flynn, A. Jüttner, R. D. Kenway, C. T. Sachrajda, S. Sasaki, A. Soni, R. J. Tweedie, J. M. Zanotti

Research output: Contribution to journalConference articlepeer-review


We present the latest results from the UKQCD/RBC collaborations for the Kl3 form factor from simulations with 2 + 1 flavours of dynamical domain wall quarks. Simulations are performed on lattices with two different volumes and four values of the light quark mass, allowing for an extrapolation to the chiral limit. The analysis includes a thorough investigation into the sources of systematic error in our fits. After interpolating to zero momentum transfer, we obtain f+(0) 0.964(5) (or δf -0.013(5)) which, when combined with the latest experimental results for Kl3 decays, leads to |Vus| 0.2249(14).

Original languageEnglish
Article number102012
JournalJournal of Physics: Conference Series
Issue number10
Publication statusPublished - 2008 Jun 30
Externally publishedYes
EventEPS High Energy Particle Physics Conference, HEPP 2007 - Manchester, United Kingdom
Duration: 2007 Jul 192007 Jul 26

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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