Abstract
We propose a generalized Zee-Babu model with a global $U(1)$ B-L symmetry, in which we classify the model in terms of the number of the hypercharge $N/2$ of the isospin doublet exotic charged fermions. Corresponding to each of the number of $N$, we need to introduce some multiply charged bosons in order to make the exotic fields decay into the standard model fields. We also discuss the muon anomalous magnetic moment and the diphoton excess depending on $N$, and we show what kind of models are in favor of these phenomenologies.
Highlights
We propose a generalized Zee-Babu model with a global U (1) B-L symmetry, in which we classify the model in terms of the number of the hypercharge N/2 of the isospin doublet exotic charged fermions
We propose a generalized Zee-Babu model with a global U(1) B-L symmetry, in which neutrino masses are induced at the two loop level
We introduce vector like isospin doublet fermions with general N/2 hypercharges that can explain the discrepancy of the muon anomalous magnetic moment to the standard model (SM) sizably
Summary
The recent measurements reported by ATLAS and CMS experiments implies that a new particle (ΦNew) might exist at around 750 GeV by the diphoton invariant mass spectrum from the run-II data in 13 TeV [1, 2]. Zee-Babu type [182] of radiative seesaw models could provide one of the economical scenarios to include such new exotic fields with nonzero electric charges (bosons or fermions) that are naturally introduced in order to explain the diphoton excess and to explain the tiny neutrino masses. We introduce vector like isospin doublet fermions with general N/2 hypercharges that can explain the discrepancy of the muon anomalous magnetic moment to the standard model (SM) sizably. Corresponding to each of the number of N, we need to introduce some multiply charged bosons in order to make the exotic fields decay into the standard model fields. We classify the model according to the number of N, and we discuss what kind of models are in favor of explaining the sizable diphoton resonance as well as the muon anomalous magnetic moment.
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