The Ademollo-Gatto theorem for lattice semileptonic decays

Details The Ademollo-Gatto theorem for lattice semileptonic decays The Ademollo-Gatto theorem for lattice semileptonic decays

2005-08-16

arxiv.org/abs/hep-lat/0508013v1

Phys.Lett. B633 (2006) 84-88

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages

Scientific paper

10.1016/j.physletb.2005.11.020

We present the results of the calculation of the Kl3 semileptonic form factor at zero momentum transfer, f(0), obtained at one-loop in partially quenched Chiral Perturbation Theory (with either Nf=2, or Nf=3, and with generic valence and sea quark masses). We show that for Nf=2, when the masses of the valence and sea light quarks are equal, the correction is of the order (MK^2-Mpi^2)^3. The formulae presented here can be useful for the mass extrapolation of the results obtained in lattice simulations to the physical point.

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