A search for heavy neutrinos in the Run II of LHC with the CMS detector

A new search for heavy neutrinos in the dilepton plus dijet final state is motivated by the CMS experimental results of Run I and by the sensitivity of this channel to many theoretical model beyond the Standard Model. The new proposed model includes both composite fermions and contact interactions. In our benchmark process, a heavy Majorana neutrino is produced in association with a lepton and decays in a same flavor lepton plus two jets. The contribution at vertices given by the contact interaction affects the production cross section and the final state topology of the process. The model versatility and its exclusion/discovery potential, according to a preliminary simulation, are presented