Abstract
The type I see-saw mechanism requires the existence of right-handed neutrinos with a Majorana mass much larger than the Dirac neutrino mass. Nevertheless, the right-handed neutrino mass scale is completely unknown and can range between 0 and the Planck mass. In this talk we discuss the constraints on the scenario where the right-handed neutrino mass lies at the TeV scale, motivated by the possibility of testing the mechanism of neutrino mass generation at the Large Hadron Collider.
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