We present the status of a lattice calculation for the K --> pipi matrix elements of the DeltaS=1 effective weak Hamiltonian, directly with two pion in the final state. We study the energy shift of two pion in a finite volume both in the I=0 and I=2 channels. We explain a method to avoid the Goldstone pole contamination in the computation of renormalization constants for DeltaI=3/2 operators. Finally we show some preliminary results for the matrix elements of DeltaI=1/2 operators. Our quenched simulation is done at beta=6.0, on a 24(3) x 64 lattice.

Boucaud, P., Gimenez, V., Lin, C., Lubicz, V., Martinelli, G., Papinutto, M., et al. (2002). Extraction of K -> pi pi matrix elements with Wilson fermions. In LATTICE 2001. Proceedings of the XIXth International Symposium on Lattice Field Theory (pp.323-325) [10.1016/S0920-5632(01)01702-9].

Extraction of K -> pi pi matrix elements with Wilson fermions

LUBICZ, Vittorio;
2002-01-01

Abstract

We present the status of a lattice calculation for the K --> pipi matrix elements of the DeltaS=1 effective weak Hamiltonian, directly with two pion in the final state. We study the energy shift of two pion in a finite volume both in the I=0 and I=2 channels. We explain a method to avoid the Goldstone pole contamination in the computation of renormalization constants for DeltaI=3/2 operators. Finally we show some preliminary results for the matrix elements of DeltaI=1/2 operators. Our quenched simulation is done at beta=6.0, on a 24(3) x 64 lattice.
2002
Boucaud, P., Gimenez, V., Lin, C., Lubicz, V., Martinelli, G., Papinutto, M., et al. (2002). Extraction of K -> pi pi matrix elements with Wilson fermions. In LATTICE 2001. Proceedings of the XIXth International Symposium on Lattice Field Theory (pp.323-325) [10.1016/S0920-5632(01)01702-9].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/178782
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