@Article{Anamiati_etal2016,
author="Anamiati, G.
and Hirsch, M.
and Nardi, E.",
title="Quasi-Dirac neutrinos at the LHC",
journal="Journal of High Energy Physics",
year="2016",
publisher="Springer",
volume="10",
number="10",
pages="010--19pp",
optkeywords="Beyond Standard Model; Neutrino Physics",
abstract="Lepton number violation is searched for at the LHC using same-sign leptons plus jets. The standard lore is that the ratio of same-sign lepton to opposite-sign lepton events, R-ll, is equal to R-ll = 1 (R-ll = 0) for Majorana (Dirac) neutrinos. We clarify under which conditions the ratio Rll can assume values different from 0 and 1, and we argue that the precise value 0 < R-ll < 1 is controlled by the mass splitting versus the width of the quasi-Dirac resonances. A measurement of R-ll not equal 0, 1 would then contain valuable information about the origin of neutrino masses. We consider as an example the inverse seesaw mechanism in a left-right symmetric scenario, which is phenomenologically particularly interesting since all the heavy states in the high energy completion of the model could be within experimental reach. A prediction of this scenario is a correlation between the values of R-ll and the ratio between the rates for heavy neutrino decays into standard model gauge bosons, and into three body final states ljj mediated by off-shell W-R exchange.",
optnote="WOS:000385397800001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2834), last updated on Fri, 11 Nov 2016 14:43:52 +0000",
issn="1029-8479",
doi="10.1007/JHEP10(2016)010",
opturl="http://arxiv.org/abs/1607.05641",
opturl="https://doi.org/10.1007/JHEP10(2016)010",
archivePrefix="arXiv",
eprint="1607.05641",
language="English"
}