Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-12-06
PoS ICHEP2010:296,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
Latex 4 pages, 4 eps figures. Contribution to the Proceedings of the 35th International Conference of High Energy Physics - IC
Scientific paper
We update present bounds on the helicity of the neutrinos produced in muon decay, including e+ e- -> fbar f LEP 2 data. These significantly reduce the limits derived from all the other electroweak precision data. In Standard Model extensions designed to maximize the RH neutrino production in such a decay the neutrino deficit eventually observable in a near detector at a neutrino factory can be of the order of 5 %. Motivated by the current LHC run at 7 TeV, we also update previous work providing discovery limits on see-saw mediators at this centre of mass energy. Lepton triplets with 200 GeV could be discovered with luminosities of 1 - 1.5 fb^-1. Scalar triplets of the same mass might be seen with 0.75 - 3 fb^-1. What makes their search also attractive in the first LHC analyses.
Aguila Francisco del
Aguilar-Saavedra Juan Antonio
Blas Jorge de
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