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Kπl νform factor with Nf=2+1 dynamical domain wall fermions

D. J. Antonio, P. A. Boyle, C. Dawson, T. Izubuchi, A. Jüttner, C. Sachrajda, S. Sasaki, A. Soni, R. J. Tweedie, J. M. Zanotti

hep-latarXiv:hep-lat/0610080

Abstract

We present the latest results from the UKQCD/RBC collaborations for the Kl3 form factor with 2+1 flavours of dynamical domain wall quarks. Simulations are performed on 163x32x16 and 243x64x16 lattices with three values of the light quark mass, allowing for an extrapolation to the chiral limit. After interpolating to zero momentum transfer, we obtain the preliminary result f+Kπ(0)=0.9680(16), which is in excellent agreement with an earlier Nf=2 result.

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