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arXiv · 1512.08484

Neutrino Catalyzed Diphoton Excess

Wei Chao
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Abstract

In this paper we explain the 750 GeV diphoton resonance observed at the run-2 LHC as a scalar singlet $S$, that plays a key rule in generating tiny but nonzero Majorana neutrino masses. The model contains four electroweak singlets: two leptoquarks, a singly charged scalar and a neutral scalar $S$. Majorana neutrino masses might be generated at the two-loop level as $S$ get nonzero vacuum expectation value. $S$ can be produced at the LHC through the gluon fusion and decays into diphoton at the one-loop level with charged scalars running in the loop. The model fits perfectly with a wide width of the resonance. Constraints on the model are investigated, which shows a negligible mixing between the resonance and the standard model Higgs boson.

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Wei Chao. 2016-04-01. Neutrino Catalyzed Diphoton Excess. https://doi.org/10.1016/j.nuclphysb.2016.08.012

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