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Non-perturbative Renormalization of the Complete Basis of Four-fermion Operators and B-parameters

L. Conti·A. Donini·V. Gimenez·G. Martinelli·M. Talevi·A. Vladikas
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Abstract

We present results on the B-parameters $B_K$, $B^{3/2}_7$ and $B^{3/2}_8$, at $β=6.0$, with the tree-level Clover action. The renormalization of the complete basis of dimension-six four-fermion operators has been performed non-perturbatively. Our results for $B_K$ and $B^{3/2}_7$ are in reasonable agreement with those obtained with the (unimproved) Wilson action. This is not the case for $B^{3/2}_8$. We also discuss some subtleties arising from a recently proposed modified definition of the B-parameters.

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L. Conti, A. Donini, V. Gimenez, G. Martinelli, M. Talevi, A. Vladikas. 1997-10-04. Non-perturbative Renormalization of the Complete Basis of Four-fermion Operators and B-parameters. https://doi.org/10.1016/s0920-5632(97)00928-6

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