Heavy Neutrinos, Z and Higgs Bosons at the LHC: New Particles from an Old SymmetryReport as inadecuate




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A new era in particle physics is being spurred on by new data from the Large Hadron Collider. Non-vanishing neutrino masses represent firm observational evidence of new physics beyond the Standard Model. An extension of the latter, based on a SU3C × SU2L × U1Y × U1B-L symmetry, incorporating an established Baryon minus Lepton number invariance, is proposed as a viable and testable solution to the neutrino mass problem. We argue that LHC data will probe all the new content of this model: heavy neutrinos, an extra gauge boson emerging from spontaneous breaking of the additional gauge group at the TeV scale, onset by a new heavier Higgs boson, also visible at the CERN proton-proton collider. An even more exciting version of this model is the one exploiting Supersymmetry: firstly, it incurporates all its well-known benefits; secondly, it alleviates the flaws of its more minimal realisations. Finally, this model provides a credible cold Dark Matter candidate, the lightest sneutrino, detectable in both underground and collider experiments.

KEYWORDS

B-L; Heavy Neutrinos; Extra Neutral Gauge Boson; Higgs Bosons

Cite this paper

S. Khalil and S. Moretti -Heavy Neutrinos, Z- and Higgs Bosons at the LHC: New Particles from an Old Symmetry,- Journal of Modern Physics, Vol. 4 No. 1, 2013, pp. 7-10. doi: 10.4236-jmp.2013.41002.





Author: Shaaban Khalil, Stefano Moretti

Source: http://www.scirp.org/



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