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).
|ジャーナル||Journal of Physics: Conference Series|
|出版ステータス||Published - 2008 6月 30|
|イベント||EPS High Energy Particle Physics Conference, HEPP 2007 - Manchester, United Kingdom|
継続期間: 2007 7月 19 → 2007 7月 26
ASJC Scopus subject areas