The Bosonization of the Electroweak Penguin Operators

Details The Bosonization of the Electroweak Penguin Operators The Bosonization of the Electroweak Penguin Operators

1996-06-09

arxiv.org/abs/hep-ph/9606279v1

Phys.Lett. B387 (1996) 609-613

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, uuencoded Latex + eps files

Scientific paper

10.1016/0370-2693(96)01082-9

We give the complete $O(p^2)$ bosonization of the electroweak Penguin operators $Q_{7,8}$ and compare the result with that of the gluon Penguin operators $Q_{5,6}$. We find that, in addition to the usual (constant and current-current) parts, there are three new terms not discussed previously in the literature. Two of these are present in the factorization approximation and should be included in the standard definition of the $B_{7,8}$-factors. The impact of these corrections on the direct $CP$-violating parameter $\varepsilon '/\varepsilon$ is briefly discussed.

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