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arXiv · hep-lat/0508013

The Ademollo-Gatto theorem for lattice semileptonic decays

Damir Becirevic·Guido Martinelli·Giovanni Villadoro
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Abstract

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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Damir Becirevic, Guido Martinelli, Giovanni Villadoro. 2005-08-16. The Ademollo-Gatto theorem for lattice semileptonic decays. https://doi.org/10.1016/j.physletb.2005.11.020

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