Search for heavy Majorana neutrinos in μ±μ±+jets and e±e±+jets events in pp collisions at s=7TeV
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 717:1-3 (2012) 109-128
Abstract:
A search is performed for heavy Majorana neutrinos (N) using an event signature defined by two same-sign charged leptons of the same flavour and two jets. The data correspond to an integrated luminosity of 4.98fb-1 of pp collisions at a centre-of-mass energy of 7 TeV collected with the CMS detector at the Large Hadron Collider. No excess of events is observed beyond the expected standard model background and therefore upper limits are set on the square of the mixing parameter, |VℓN|2, for ℓ=e, μ, as a function of heavy Majorana-neutrino mass. These are the first direct upper limits on the heavy Majorana-neutrino mixing for mN>90GeV. © 2012 CERN.Search for pair production of third-generation leptoquarks and top squarks in pp collisions at sqrt(s) = 7 TeV
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