6533b855fe1ef96bd12b1189
RESEARCH PRODUCT
Kl3form factor withNf= 2 +1 dynamical domain wall fermions
Peter BoyleRichard KenwayR. J. TweedieJonathan M. FlynnShoichi SasakiShoichi SasakiJames ZanottiAmarjit SoniAndreas JüttnerChristopher T. Sachrajdasubject
QuarkPhysicsHistoryParticle physicsCabibbo–Kobayashi–Maskawa matrixHigh Energy Physics::LatticeMomentum transferLattice field theoryExtrapolationForm factor (quantum field theory)FermionComputer Science ApplicationsEducationDomain wall (string theory)description
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 ?f = -0.013(5)) which, when combined with the latest experimental results for Kl3 decays, leads to |Vus| = 0.2249(14).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-05-01 | Journal of Physics: Conference Series |