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arXiv · hep-ph/9405399

Neutrino Masses and $b-τ$ unification in the Supersymmetric Standard Model

F. Vissani·A. Yu. Smirnov
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Abstract

There are several indications that the Majorana masses of the right-handed neutrino components, $M_R,$ are at the intermediate scale: $M_R\sim (10^{10}-10^{12})$ GeV or even lighter. The renormalization effects due to large Yukawa couplings of neutrinos from region of momenta $M_R \ltap q \ltap M_G$ are studied in the supersymmetric standard model. It is shown that neutrino renormalization effect can increase the $m_b/m_τ$ ratio up to $(10÷15)\%.$ This strongly disfavours $m_b-m_τ$ unification for low values of $\tanβ< 10$ especially at large values of $α_s.$ Lower bounds on $M_R$ and $\tanβ$ from the $b-τ$ unification condition were found. The implications of the results to the see-saw mechanism of the neutrino mass generation are discussed.

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F. Vissani, A. Yu. Smirnov. 1994-05-27. Neutrino Masses and $b-τ$ unification in the Supersymmetric Standard Model. https://doi.org/10.1016/0370-2693(94)90307-7

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