Lattice B-parameters for Delta S=2 and Delta I=3/2 operators
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Lattice B-parameters for Delta S=2 and Delta I=3/2 operators

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Lattice B-parameters for Delta S=2 and Delta I=3/2 operators

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Conti, Livio; Donini, Andrea; Giménez Gómez, Vicente; Martinelli, Guido; Talevi, Mauro; Vladikas, A.
Aquest document és un/a article, creat/da en: 1998
We compute several matrix elements of dimension-six four-fermion operators and extract their B-parameters. The calculations have been performed with the tree-level Clover action at beta = 6.0. The renormalization constants and mixing coefficients of the lattice operators have been obtained non-perturbatively. In the <(MS)over bar> renormalization scheme, at a renormalization scale mu similar or equal to 2 GeV, we find B-K(B-9(3/2))=0.66(11), B-7(3/2)=0.72(5) and B-8(3/2)=1.03(3). The result for B-8(3/2) has important implications for the calculation of epsilon'/epsilon.

    Conti, Livio Donini, Andrea Giménez Gómez, Vicente Martinelli, G. Talevi, Mauro Vladikas, A. 1998 Lattice B-parameters for Delta S=2 and Delta I=3/2 operators Physics Letters B 421 1-4 273 282
http://dx.doi.org/10.1016/S0370-2693(98)00019-7
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