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- W1986551246 abstract "The LEP experiments give a lower bound on the neutralino mass of about 46 GeV which, however, relies on a supersymmetric grand unification relation. Dropping this assumption, the experimental lower bound on the neutralino mass vanishes completely. Recent analyses suggest, however, that in the minimal supersymmetric standard model (MSSM), a light neutralino dark matter candidate has a lower bound on its mass of about 7 GeV. In light of this, we investigate the mass sensitivity at the ILC for very light neutralinos. We study slepton pair production, followed by the decay of the sleptons to a lepton and the lightest neutralino. We find that the mass measurement accuracy for a few-GeV neutralino is around 2 GeV, or even less if the relevant slepton is sufficiently light. We thus conclude that the ILC can help verify or falsify the MSSM neutralino cold dark matter model even for very light neutralinos." @default.
- W1986551246 created "2016-06-24" @default.
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- W1986551246 date "2011-03-30" @default.
- W1986551246 modified "2023-09-24" @default.
- W1986551246 title "Measuring a light neutralino mass at the ILC: Testing the MSSM neutralino cold dark matter model" @default.
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- W1986551246 doi "https://doi.org/10.1103/physrevd.83.055018" @default.
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