Heavy neutrinos and the pp → lljj CMS data

We show that the excess in the pp -> eejj CMS data can be naturally interpreted within the Minimal Left-Right Symmetric model (MLRSM), keeping g(L) = g(R), if CP phases and non-degenerate masses of heavy neutrinos are taken into account. As an additional benefit, a natural interpretation of the reported ratio (14 : 1) of the opposite-sign (OS) pp -> l(+/-)l(-/+) jj to the same-sign (SS) pp -> l(+/-) l(+/-) jj lepton signals is possible. Finally, a suppression of muon pairs with respect to electron pairs in the pp -> lljj data is obtained, in accordance with experimental data. If the excess in the CMS data survives in the future, it would be a first clear hint towards presence of heavy neutrinos in right-handed charged currents with specific CP phases, mixing angles and masses, which will have far reaching consequences for particle physics directions. (C) 2015 The Authors. Published by Elsevier B.V.