Exotic Seesaw-Motivated Heavy Leptons at the LHC
High Energy Physics - Phenomenology
2013-05-29 v2 High Energy Physics - Experiment
Abstract
We study the LHC potential for discovering TeV-scale SU(2)_L 5-plet fermions introduced recently to explain small neutrino masses. We show that the Drell-Yan production and the decays of new exotic Sigma leptons are testable at the LHC. Their production is abundant due to nontrivial electroweak gauge charges. For 1 fb^-1 of integrated luminosity at the present LHC sqrt{s}=7 TeV, there can be 270 Sigma-Sigmabar pairs produced for M_Sigma = 400 GeV. Besides producing same-sign dilepton events, they could lead, due to a chosen small mixing between heavy and light leptons, to ~10 golden decays Sigma^{+++}(Sigma^{+++}-bar) --> W^\pm W^\pm l^\pm with a specific decay signature.
Keywords
Cite
@article{arxiv.1106.1069,
title = {Exotic Seesaw-Motivated Heavy Leptons at the LHC},
author = {Kresimir Kumericki and Ivica Picek and Branimir Radovcic},
journal= {arXiv preprint arXiv:1106.1069},
year = {2013}
}
Comments
31 pages, 10 figures, corresponds to the PRD version