Supersymmetric Standard Model
نویسنده
چکیده
There are several indications that the Majorana masses of the right-handed neutrino components, MR, are at the intermediate scale: MR ∼ (10 − 10) GeV or even lighter. The renormalization effects due to large Yukawa couplings of neutrinos from region of momenta MR ∼< q ∼< MG are studied in the supersymmetric standard model. It is shown that neutrino renormalization effect can increase the mb/mτ ratio up to (10 ÷ 15)%. This strongly disfavours mb −mτ unification for low values of tanβ < 10 especially at large values of αs. Lower bounds on MR 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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تاریخ انتشار 1994