Estimates of $ε\prime/ε$

Details Estimates of $ε\prime/ε$ Estimates of $ε\prime/ε$

1995-03-09

arxiv.org/abs/hep-ph/9503277v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 29 pages, 5 postscript figures, contribution to the 2nd Daphne Physics Handbook

Scientific paper

We review the latest calculations of the next-to-leading $\DSone$ effective Hamiltonian, relevant for $K\to \pi\pi$ transitions. Numerical results for the Wilson coefficients are given for different regularization schemes. Predictions of $\epse$, obtained using different approaches to evaluate the relevant hadronic matrix elements, are compared. Given the present value of the top mass, $m_t=(174\pm 17)$ GeV, all the analyses, in spite of the large theoretical uncertainties, indicate that the value of $\epse$ is smaller than $1\times 10^{-3}$.

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