Is the CMS eejj excess a hint for light supersymmetry?

TL;DR

This paper explores how additional decay channels of right-handed neutrinos into light charged Higgs bosons in a supersymmetric left-right model can explain the CMS eejj excess, predicting new particles for future detection.

Contribution

It introduces a supersymmetric left-right model with novel decay modes that can account for the CMS eejj excess and makes testable predictions for upcoming LHC discoveries.

Findings

The eejj excess can be explained by decays into Higgsino-like charginos and neutralinos.

The model predicts a right-handed neutrino below 200 GeV.

A doubly charged Higgs boson should be observable at the LHC.

Abstract

We discuss the impact of additional two-body decays of the right-handed neutrino into a light charged Higgs state on the dilepton plus dijet cross sections from resonant $W'$ production. We consider in particular a supersymmetric left-right symmetric model which predicts such a light charged Higgs boson. We demonstrate that the $eejj$ excess as measured by CMS can be explained best if the $W'$ also has decay modes into Higgsino-like charginos and neutralinos with masses of a few hundred GeV. Provided that this excess is confirmed, the model predicts also one right-handed neutrino with a mass below 200 GeV as well as a doubly charged Higgs boson which should be discovered at the LHC in the near future.