Testing New TeV-scale Seesaw Mediators at the LHC

Details Testing New TeV-scale Seesaw Mediators at the LHC Testing New TeV-scale Seesaw Mediators at the LHC

2011-05-27

arxiv.org/abs/1105.5561v1

PoS(ICHEP 2010)329

Physics

High Energy Physics

High Energy Physics - Phenomenology

2 pages, 1 figure

Scientific paper

We propose TeV-scale Dirac fermions producing Majorana masses of the known neutrinos via tree-level seesaw, different from standard type I and III seesaw. The employed weak five-plet with nonzero hypercharge leads to new seesaw formula m_\nu ~ v^6/M^5 and to empirical masses m_\nu ~ 10^{-1} eV for M ~ TeV new states. For a limited range of the parameter space, where M < a few 100 GeV, the proposed mechanism is testable at the LHC via characteristic decays of Dirac type heavy leptons, produced by a Drell-Yan fusion.

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