Same-Sign Dilepton Production via Heavy Majorana Neutrinos in Proton-Proton Collisions

Details Same-Sign Dilepton Production via Heavy Majorana Neutrinos in Proton-Proton Collisions Same-Sign Dilepton Production via Heavy Majorana Neutrinos in Proton-Proton Collisions

2001-12-04

arxiv.org/abs/hep-ph/0112043v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 2 figures (requires 10lomcon.sty, cite.sty); added two references; to be published in the Proceedings of the 10th Lom

Scientific paper

We discuss same-sign dilepton production mediated by Majorana neutrinos in high-energy proton-proton collisions $pp\ra \ell^+ \ell^{\prime +}X$ for $\ell,~ \ell^\prime = e,~ \mu,~ \tau$ at the LHC energy $\sqrt{s}=14$ TeV. Assuming one heavy Majorana neutrino of mass $m_N$, we present discovery limits in the $(m_{N},|U_{\ell N}U_{\ell^\prime N}|)$ plane where $U_{\ell N}$ are the mixing parameters. Taking into account the present limits from low energy experiments, we show that at LHC one has sensitivity to heavy Majorana neutrinos up to a mass $m_{N}\leq 2$ -- 5 TeV in the dilepton channels $\mu\mu,~ \tau\tau$, and $\mu\tau$, but the dilepton states $e\ell$ will not be detectable due to the already existing constraints from neutrinoless double beta decay.

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