Constraints on the R-Parity-violating minimal supersymmetric standard model with neutrino masses from multilepton studies at the LHC

TL;DR

This paper constrains a specific R-parity-violating supersymmetric model using multilepton LHC data, linking neutrino mass data to collider signatures with reduced missing energy, and setting exclusion limits.

Contribution

It introduces a hierarchical ansatz reducing free parameters in the model, connecting neutrino data to collider signatures, and derives new LHC exclusion limits for this scenario.

Findings

Model parameters fixed by neutrino oscillation data

Distinct multilepton signatures with low missing energy identified

Exclusion limits set based on 7 TeV LHC data with 125 GeV Higgs

Abstract

In a recent paper, we proposed a hierarchical ansatz for the lepton-number-violating trilinear Yukawa couplings of the R-parity-violating minimal supersymmetric standard model. As a result, the number of free parameters in the lepton-number-violating sector was reduced from 36 to 6. Neutrino oscillation data fixes these six parameters, which also uniquely determines the decay modes of the lightest supersymmetric particle and thus governs the collider signature at the LHC. A typical signature of our model consists of multiple leptons in the final state and significantly reduced missing transverse momentum compared to models with R-parity conservation. In this work, we present exclusion limits on our model based on multilepton searches performed at the Large Hadron Collider with 7 TeV center-of-mass energy in 2011 while accommodating a 125 GeV Higgs.