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Distinguishing between MSSM and NMSSM by combined LHC and ILC analyses.

Moortgat-Pick, G. and Hesselbach, S. and Franke, F. and Fraas, H. (2005) 'Distinguishing between MSSM and NMSSM by combined LHC and ILC analyses.', Journal of high energy physics., 2005 (06). 048.


We show that the interplay between the LHC and the e+e- International Linear Collider (ILC) with (s)1/2 = 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 a 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.

Item Type:Article
Keywords:Supersymmetry phenomenology, Supersymmetric standard model.
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Record Created:08 May 2008
Last Modified:17 Jun 2015 11:02

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