In GmSUGRA, a light Higgsino-like neutralino dark matter at the Z and Higgs poles survives the LHC and LZ constraints only when the Higgsino mass parameter μ is negative.
SUSY Decays of Higgs Particles
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abstract
Among the possible decay modes of Higgs particles into supersymmetric states, neutralino and chargino decays play a prominent r\^ole. The experimental opportunities of observing such decay modes at LEP2 and at future e+e- linear colliders are analyzed within the frame of the Minimal Supersymmetric extension of the Standard Model. For heavy Higgs particles, the chargino/neutralino decay modes can be very important, while only a small window is open for the lightest CP-even Higgs particle. If charginos/neutralinos are found at LEP2, such decay modes can be searched for in a small area of the parameter space, and invisible decays may reduce the exclusion limits of the lightest CP-even Higgs particle slightly; if charginos/neutralinos are not found at LEP2 in direct searches, the Higgs search will not be affected by the SUSY particle sector.
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The Light Neutralino Dark Matter in the Generalized Minimal Supergravity (GmSUGRA)
In GmSUGRA, a light Higgsino-like neutralino dark matter at the Z and Higgs poles survives the LHC and LZ constraints only when the Higgsino mass parameter μ is negative.