51. Extraction of K --> pi pi matrix elements with Wilson fermions
- Author
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Boucaud, Ph., Gimenez, V., Lin, C. J. D., Lubicz, V., Martinelli, G., Papinutto, M., Rapuano, F., Sachrajda, C. T., collaboration, S. P. Qcd R., Boucaud, P, Giménez, V, Lin, C, Lubicz, V, Martinelli, G, Papinutto, M, Rapuano, F, Sachrajda, C, Gimenez, V, Lin, Cjd, Lubicz, Vittorio, and Sachrajda, Ct
- Subjects
Physics ,Nuclear and High Energy Physics ,Finite volume method ,Computation ,High Energy Physics::Lattice ,Fermion ,Atomic and Molecular Physics, and Optics ,Renormalization ,FIS/02 - FISICA TEORICA, MODELLI E METODI MATEMATICI ,symbols.namesake ,Pion ,High Energy Physics - Lattice ,lattice qcd ,Lattice (order) ,visual_art ,visual_art.visual_art_medium ,symbols ,Física nuclear ,Hamiltonian (quantum mechanics) ,Goldstone ,Mathematical physics - Abstract
We present the status of a lattice calculation for the K-->pipi matrix elements of the (delta S=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 (delta I=3/2) operators. Finally we show some preliminary results for the matrix elements of (delta I=1/2) operators. Our quenched simulation is done at beta=6.0, with Wilson fermions, on a (24^3 X 64) lattice., Comment: 3 pages (5 figs), Lattice2001 (matrixelement)
- Published
- 2002