Majorana neutrino mass models with a scale of lepton number violation (LNV) of order TeV potentially lead to signals at the LHC. Here, we consider an extension of the standard model with a coloured octet fermion and a scalar leptoquark. This model generates neutrino masses at 2-loop order. We make a detailed MonteCarlo study of the LNV signal at the LHC in this model, including a simulation of standard model backgrounds. Our forecast predicts that the LHC with 300/fb should be able to probe this model up to colour octet fermion masses in the range of (2.6-2.7) TeV, depending on the lepton flavour of the final state.
@article{arxiv.1904.07257,
title = {Exotic coloured fermions and lepton number violation at the LHC},
author = {E. Carquin and J. C. Helo and M. Hirsch and N. A. Neill},
journal= {arXiv preprint arXiv:1904.07257},
year = {2019}
}