Trilepton Signals: The Golden Channel for Seesaw Searches at LHC
Abstract
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 Delta (type II) and fermion Sigma (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 N (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 sim 2 TeV for new gauge boson masses up to sim 4 TeV, as we discuss in some detail.
- Publication:
-
Acta Physica Polonica B
- Pub Date:
- November 2009
- DOI:
- 10.48550/arXiv.0910.2720
- arXiv:
- arXiv:0910.2720
- Bibcode:
- 2009AcPPB..40.2901D
- Keywords:
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- High Energy Physics - Phenomenology
- E-Print:
- Latex 11 pages, 7 eps figures. Contribution to the Proceedings of the XXXIII International School of Theoretical Physics "Matter To The Deepest", Ustron, Poland, September 11-16, 2009