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arXiv · 1410.7606

Loop-induced Neutrino Masses: A Case Study

Chao-Qiang Geng·Da Huang·Lu-Hsing Tsai
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Abstract

We study the cocktail model in which the Majorana neutrino masses are generated by the so-called "cocktail" three-loop diagrams with the dark matter particle running in the loops. In particular, we give the correct analytic expressions of the neutrino masses in the model by the detailed calculation of the cocktail diagrams. Based on the reliable numerical calculation of the loop integrals, we explore the parameter space which can give the correct orders of neutrino masses while satisfying other experimental constraints, such as those from the neutrinoless double beta decay, low-energy lepton flavor violation processes, electroweak precision tests, and collider searches. As a result, the large couplings and the large mass difference between the two singly-charged (neutral) scalars are required.

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Chao-Qiang Geng, Da Huang, Lu-Hsing Tsai. 2014-10-28. Loop-induced Neutrino Masses: A Case Study. https://doi.org/10.1103/physrevd.90.113005

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