Probing the seesaw mechanism at CERN LHC
- J. Stefan Institute, 1001 Ljubljana (Slovenia)
- International Centre for Theoretical Physics, Trieste (Italy)
We have recently proposed a simple SU(5) theory with an adjoint fermionic multiplet on top of the usual minimal spectrum. This leads to the hybrid scenario of both type I and type III seesaw and it predicts the existence of the fermionic SU(2) triplet between 100 GeV and 1 TeV for a conventional grand unified theory scale of about 10{sup 16} GeV, with main decays into W (Z) and leptons, correlated through Dirac Yukawa couplings, and lifetimes shorter than about 10{sup -12}sec. These decays are lepton number violating and they offer an exciting signature of {delta}L=2 dilepton events together with 4 jets at future pp (pp) colliders. Increasing the triplet mass endangers the proton stability and so the seesaw mechanism could be directly testable at LHC.
- OSTI ID:
- 21027714
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 76, Issue 5; Other Information: DOI: 10.1103/PhysRevD.76.055011; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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