Distinguishing between MSSM and NMSSM by combined LHC and ILC analyses

Abstract

We show that the interplay between the LHC and the e^+ e^- International Linear Collider (ILC) with sqrt{s}=500 GeV might be crucial for the discrimination between the minimal and next-to-minimal supersymmetric standard model. We present an NMSSM scenario that cannot be distinguished from the MSSM by cross sections and mass measurements if only the light neutralinos and the lightest chargino are kinematically accessible, even if one of the neutralinos has a significant singlino component. Mass predictions for the heavier neutralinos from the ILC analysis and their observation at the LHC lead to an identification of the neutralino mixing character and the underlying supersymmetric model in a combined LHC/ILC analysis. In our numerical example we include errors in the mass measurements and use standard methods of supersymmetric parameter determination.

arXiv comment14 pages, LaTeX, 1 figure; v2: discussion of Higgs sector and references added, published version

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Cited by in corpus (9)

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• A Minimal Spontaneously Broken Hidden Sector and its Impact on Higgs Boson Physics at the Large Hadron Collider
• Physics at the e+ e- Linear Collider
• Confronting the MSSM and the NMSSM with the Discovery of a Signal in the two Photon Channel at the LHC
• Theoretical upper bound on the mass of the LSP in the MNSSM
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• Precision measurements, dark matter direct detection and LHC Higgs searches in a constrained NMSSM
• LHC/ILC Interplay in SUSY Searches
• Neutralinos betray their singlino nature at the ILC