An Analytic Formula and an Upper Bound for epsilon'/epsilon in the Standard Model
High Energy Physics - Phenomenology
2010-11-01 v1
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.
Cite
@article{arxiv.hep-ph/9309203,
title = {An Analytic Formula and an Upper Bound for epsilon'/epsilon in the Standard Model},
author = {Andrzej J. Buras and Markus E. Lautenbacher},
journal= {arXiv preprint arXiv:hep-ph/9309203},
year = {2010}
}
Comments
10 pages with 1 figure appended in PostScript format; MPI preprint MPI-Ph/93-60 and TU preprint TUM-T31-47/93