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K\toπl νform factor with N_f=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
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Abstract

We present the latest results from the UKQCD/RBC collaborations for the K_{l3} form factor with 2+1 flavours of dynamical domain wall quarks. Simulations are performed on 16^3x32x16 and 24^3x64x16 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 N_f=2 result.

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D. J. Antonio, P. A. Boyle, C. Dawson, T. Izubuchi, A. Jüttner, C. Sachrajda, S. Sasaki, A. Soni, R. J. Tweedie, J. M. Zanotti. 2006-10-12. K\toπl νform factor with N_f=2+1 dynamical domain wall fermions. https://arxiv.org/abs/hep-lat/0610080

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