Journal article
Phenomenological analysis of an E6 -inspired seesaw model
JP Ellis, RR Volkas
Physical Review D | AMER PHYSICAL SOC | Published : 2017
Abstract
We analyze the phenomenology of a model of neutrino masses inspired by unification in E6 in which the exotic neutrinos can be present at low scales. The model introduces vector-like isosinglet down-type quarks, vector-like isodoublet leptons, neutrino singlets and two Z′ bosons. The seesaw mechanism can be achieved with exotic neutrino masses as low as 100 GeV and Yukawa couplings of order 10-3. We find that the lightest Z′ boson mass is required to be above 2.8 TeV, the exotic quark masses are required to be above 1.3 TeV (810 GeV) if they are collider stable (promptly decaying), and the exotic lepton mass bounds remain at the LEP value of 102 GeV. The model also presents a type-II two-Higg..
View full abstractGrants
Funding Acknowledgements
J. P. E. thanks Jackson Clarke for the valuable discussions and guidance during this research. J. P. E. and R. R. V. also thank Jackson Clarke and Yi Cai for carefully reading and providing valuable feedback on an earlier draft of this paper. This work was supported in part by the Australian Research Council and the Commonwealth of Australia. All Feynman diagrams were drawn using TikZ-Feynman [61].