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- W1669514969 abstract "We discuss effects of the light sparticles on decays of the lightest Higgs in a supersymmetric model with nonuniversal gaugino masses at the high scale, focusing on the invisible f decays into neutralinos. These can impact significanlty the discovery possibilities of the lightest Higgs at the LHC. We show that due to these decays, there exist regions of the M 2 -μ space where the B.R. (h→γγ) becomes dangerously low even after imposing the LEP constraints on the sparticle masses, implying a possible preclusion of its discovery in the γγ channel. We find that there exist regions in the parameter space with acceptable relic density and where the ratio B.R.(h→γγ)SUSY/ B.R.(h→γγ)SM falls below 0.6, implying loss of signal γγ in the channel. These regions correspond to χ ~+ 1 , χ ~0 2 masses which should be accessible already at the Tevatron. Further we find that considerations of relic density put lower limit on the U(1) gaugino mass parameter M 1 independently of μ tan β and m 0 ." @default.
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- W1669514969 date "2002-06-28" @default.
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- W1669514969 title "Invisible Decays of the Supersymmetric Higgs and Dark Matter" @default.
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