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arXiv · hep-ph/9309203

An Analytic Formula and an Upper Bound for epsilon'/epsilon in the Standard Model

Andrzej J. Buras·Markus E. Lautenbacher
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Abstract

Using the idea of the penguin box expansion we find an analytic expression for epsilon'/epsilon in the Standard Model as a function of m_t, m_s(m_c) and two non-perturbative parameters B_6 and B_8. This formula includes next-to-leading QCD/QED short distance effects calculated recently by means of the operator product expansion and renormalization group techniques. We also derive an analytic expression for the upper bound on epsilon'/epsilon as a function of |V_cb|, |V_ub/V_cb|, B_K and other relevant parameters. Numerical examples of the bound are given.

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Andrzej J. Buras, Markus E. Lautenbacher. 1993-09-01. An Analytic Formula and an Upper Bound for epsilon'/epsilon in the Standard Model. https://doi.org/10.1016/0370-2693(93)91808-z

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