University of Minnesota
School of Physics & Astronomy
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Jeremiah Mans

Search for heavy neutrinos and W bosons with right-handed couplings in proton–proton collisions at sqrt(s) = 8 TeV
CMS Collaboration (Lead authors: J. Mans, B. Dahmes, J. Pastika), Europe Physics Journal C

Download from http://epjc.epj.org/articles/epjc/abs/2014/11/10052_2014_Article_3149/10052 ...

Abstract

A search for heavy, right-handed neutrinos, N (N = e, μ), and right-handed WR bosons, which arise in the left-right symmetric extensions of the standard model, has been performed by the CMS experiment. The search was based on a sample of two lepton plus two jet events collected in proton–proton collisions at a center-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.7 fb −1 . For models with strict left-right symmetry, and assuming only one N flavor contributes significantly to the WR decay width, the region in the two-dimensional (M WR , M N) mass plane excluded at a 95 % confidence level extends to approx- imately M WR = 3.0 TeV and covers a large range of neutrino masses below the W R boson mass, depending on the value of M WR . This search significantly extends the (M WR , M N) exclusion region beyond previous results.