K\to\pi l \nu form 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

K\to\pi l \nu form factor with N_f=2+1 dynamical domain wall fermions

High Energy Physics - Lattice 2009-10-09 v1

Authors: 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_+^{K\pi}(0)=0.9680(16), which is in excellent agreement with an earlier N_f=2 result.

Keywords

K_{l3} form factor domain wall fermions N_f=2+1 dynamical QCD chiral extrapolation zero momentum transfer UKQCD/RBC collaboration

Cite

@article{arxiv.hep-lat/0610080,
  title  = {K\to\pi l \nu form factor with N_f=2+1 dynamical domain wall fermions},
  author = {D. J. Antonio and P. A. Boyle and C. Dawson and T. Izubuchi and A. Jüttner and C. Sachrajda and S. Sasaki and A. Soni and R. J. Tweedie and J. M. Zanotti},
  journal= {arXiv preprint arXiv:hep-lat/0610080},
  year   = {2009}
}

Comments

7 pages, 4 figures, talk presented at Lattice 2006

K\to\pi l \nu form factor with N_f=2+1 dynamical domain wall fermions

Abstract

Keywords

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