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Power law enhancement of neutrino mixing angles in extra dimensions

Gautam Bhattacharyya·Srubabati Goswami·Amitava Raychaudhuri
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Abstract

We study the renormalization of the $llHH$-type Majorana neutrino mass operator in a scenario where there is a compactified extra dimension and the fields involved correspond to only the standard model particles and their Kaluza-Klein excitations. We observe that in a two flavour scenario, where one of the neutrinos is necessarily $ν_τ$, it is indeed possible to generate a large mixing at $\sim$ 100 GeV starting from a very small mixing near the ultra-violet cutoff $\sim$ 30 TeV. {\em En passant}, we also derive the Higgs mass upper and lower limits from perturbative unitarity and stability of the potential, respectively.

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Gautam Bhattacharyya, Srubabati Goswami, Amitava Raychaudhuri. 2002-07-10. Power law enhancement of neutrino mixing angles in extra dimensions. https://doi.org/10.1103/physrevd.66.033008

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