We present results on the B-parameters B-K, B-7(3/2) and B-8(3/2), at beta = 6.0, with the tree-level Clover action. The renormalization of the complete basis of dimension-six four-fermion operators has been performed nonperturbatively. Our results for B-K and B-7(3/2) are in reasonable agreement with those obtained with the (unimproved) Wilson action. This is not the case for B-8(3/2). We also discuss some subtleties arising from a recently proposed modified definition of the B-parameters.

Non-perturbative renormalization of the complete basis of four-fermion operators and B-parameters

Conti L;
1998-01-01

Abstract

We present results on the B-parameters B-K, B-7(3/2) and B-8(3/2), at beta = 6.0, with the tree-level Clover action. The renormalization of the complete basis of dimension-six four-fermion operators has been performed nonperturbatively. Our results for B-K and B-7(3/2) are in reasonable agreement with those obtained with the (unimproved) Wilson action. This is not the case for B-8(3/2). We also discuss some subtleties arising from a recently proposed modified definition of the B-parameters.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14086/1868
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