Journal article

Radiative neutrino mass model from a mass dimension-11 increment L=2 effective operator

John Gargalionis, Iulia Popa-Mateiu, Raymond R Volkas

JOURNAL OF HIGH ENERGY PHYSICS | SPRINGER | Published : 2020

Abstract

We present the first detailed phenomenological analysis of a radiative Majorana neutrino mass model constructed from opening up a ∆L = 2 mass-dimension-11 effective operator constructed out of standard model fields. While three such operators are generated, only one dominates neutrino mass generation, namely O47= LC¯ LQC¯ LQ¯ QCHH, where L denotes lepton doublet, Q quark doublet and H Higgs doublet. The under- lying renormalisable theory contains the scalars S1∼ (3 ¯ 1 1 / 3) coupling as a diquark, S3∼ (3 ¯ 3 1 / 3) coupling as a leptoquark, and Φ3 ∼ (3, 3, 2/3), which has no Yukawa couplings but does couple to S1 and S3 in addition to the gauge fields. Neutrino masses and mixings are genera..

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University of Melbourne Researchers

Grants

Funding Acknowledgements

We acknowledge the use of Package X [90], which was used to perform the calculations in section 3.1.1. Some Feynman diagrams were drawn with the help of the Tik Z-Feynman package for LATEX [91]. This work was supported in part by the Australian Research Council.