Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-10-15
Physics
High Energy Physics
High Energy Physics - Phenomenology
Latex 11 pages, 7 eps figures. Contribution to the Proceedings of the XXXIII International School of Theoretical Physics "Matt
Scientific paper
The comparison of samples with different number of charged leptons shows that trilepton signals are the most significant ones for seesaw mediators. As previously pointed out, this is indeed the case for scalar (type II) and fermion (type III) triplets at LHC, which can be discovered in this channel for masses up to 500-700 GeV and an integrated luminosity of 30 fb^-1; whereas fermion singlets (type I) are marginally observable if there are no further new physics near the TeV scale. However, if there are new gauge interactions at this scale coupling to right-handed neutrinos, as in left-right models, heavy neutrinos are observable up to masses ~ 2 TeV for new gauge boson masses up to ~ 4 TeV, as we discuss in some detail.
Aguila Del F.
Aguilar-Saavedra Juan Antonio
Blas Jorge de
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