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Matrix elements of DI=3/2 K-->pi pi decays

Ph. Boucaud·V. Gimenez·C. -J. D. Lin·V. Lubicz·G. Martinelli·M. Papinutto·C. T. Sachrajda
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Abstract

We present a numerical computation of matrix elements of DI=3/2 K-->pi pi decays by using Wilson fermions. In order to extrapolate to the physical point we work at unphysical kinematics and we resort to Chiral Perturbation Theory at the next-to-leading order. In particular we explain the case of the electroweak penguins O_{7,8} which can contribute significantly in the theoretical prediction of epsilon'/epsilon. The study is done at beta=6.0 on a 24^3x64 lattice.

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Ph. Boucaud, V. Gimenez, C. -J. D. Lin, V. Lubicz, G. Martinelli, M. Papinutto, C. T. Sachrajda. 2003-09-18. Matrix elements of DI=3/2 K-->pi pi decays. https://doi.org/10.1016/s0920-5632(03)02567-2

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