New techniques for chargino-neutralino detection at LHC

Abstract

The recent LHC discovery of a Higgs-like boson at 126 GeV has important consequences for SUSY, pushing the spectrum of strong-interacting supersymmetric particles to high energies, very difficult to probe at the LHC. This gives extra motivation to study the direct production of electroweak particles, as charginos and neutralinos, which are presently very poorly constrained. The aim of this work is to improve the analysis of chargino-neutralino pair production at LHC, focusing on the kinematics of the processes. We propose a new method based on the study of the poles of a certain kinematical variable. This complements other approaches, giving new information about the spectrum and improving the signal-to-background ratio. We illustrate the method in particular SUSY models, and show that working with the LHC at 100/fb luminosity one would be able to distinguish the SUSY signal from the Standard Model background.

accepted for publication in JHEP

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Cited by in corpus (7)

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• Electroweakino constraints from LHC data
• Multi-lepton signatures at LHC from sneutrino dark matter
• Implications of light charginos for Higgs observables, LHC searches and dark matter
• Confronting SUSY models with LHC data via electroweakino production
• LHC and dark matter phenomenology of the NUGHM
• Experimental status of particle and astroparticle searches for supersymmetry