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Testable two-loop radiative neutrino mass model based on an LLQd c Qd c effective operator

An Erratum to this article was published on 18 November 2014


A new two-loop radiative Majorana neutrino mass model is constructed from the gauge-invariant effective operator L i L j Q k d c Q l d c ϵ ik ϵ jl that violates lepton number conservation by two units. The ultraviolet completion features two scalar leptoquark flavors and a color-octet Majorana fermion. We show that there exists a region of parameter space where the neutrino oscillation data can be fitted while simultaneously meeting flavor-violation and collider bounds. The model is testable through lepton flavor-violating processes such as μeγ, μeee, and μNeN conversion, as well as collider searches for the scalar leptoquarks and color-octet fermion. We computed and compiled a list of necessary Passarino-Veltman integrals up to boxes in the approximation of vanishing external momenta and made them available as a Mathematica package, denoted as ANT.

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Correspondence to Michael A. Schmidt.

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Angel, P.W., Cai, Y., Rodd, N.L. et al. Testable two-loop radiative neutrino mass model based on an LLQd c Qd c effective operator. J. High Energ. Phys. 2013, 118 (2013).

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  • Beyond Standard Model
  • Neutrino Physics