Oscillating neutrinos and \(\mu\rightarrow e,\gamma\)
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Publication:5949673
DOI10.1016/S0550-3213(01)00475-8zbMATH Open0973.81542arXivhep-ph/0103065OpenAlexW2951685917MaRDI QIDQ5949673
Author name not available (Why is that?)
Publication date: 21 November 2001
Published in: (Search for Journal in Brave)
Abstract: If neutrino masses and mixings are suitable to explain the atmospheric and solar neutrino fluxes, this amounts to contributions to FCNC processes, in particular mu --> e, gamma. If the theory is supersymmetric and the origin of the masses is a see-saw mechanism, we show that the prediction for BR(mu --> e, gamma) is in general larger than the experimental upper bound, especially if the largest Yukawa coupling is O(1) and the solar data are explained by a large angle MSW effect, which recent analyses suggest as the preferred scenario. Our analysis is bottom-up and completely general, i.e. it is based just on observable low-energy data. The work generalizes previous results of the literature, identifying the dominant contributions. Application of the results to scenarios with approximate top-neutrino unification, like SO(10) models, rules out most of them unless the leptonic Yukawa matrices satisfy very precise requirements. Other possible ways-out, like gauge mediated SUSY breaking, are also discussed.
Full work available at URL: https://arxiv.org/abs/hep-ph/0103065
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