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).
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 2008 Jun 30|
|Event||EPS High Energy Particle Physics Conference, HEPP 2007 - Manchester, United Kingdom|
Duration: 2007 Jul 19 → 2007 Jul 26
ASJC Scopus subject areas
- Physics and Astronomy(all)