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- W2128314627 abstract "We analyze the implications of several recent cosmological and experimental measurements for the mass spectra of the Constrained MSSM (CMSSM). We compute the relic abundance of the neutralino and compare the new cosmologically expected and excluded mass ranges with those ruled out by the final LEP bounds on the lightest chargino and Higgs masses, with those excluded by current experimental values of $br(Bto X_s gamma)$, and with those favored by the recent measurement of the anomalous magnetic moment of the muon. We find that for $tanbetalsim 45$ there remains relatively little room for the mass spectra to be consistent with the interplay of the several constraints. On the other hand, at larger values of $tanbeta$ the decreasing mass of the pseudoscalar Higgs gives rise to a wide resonance in the neutralino WIMP pair-annihilation, whose position depends on the ratio of top and bottom quark masses. As a consequence, the cosmologically expected regions consistent with other constraints often grow significantly and generally shift towards superpartner masses in the $tev$ range." @default.
- W2128314627 created "2016-06-24" @default.
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- W2128314627 date "2001-08-08" @default.
- W2128314627 modified "2023-09-27" @default.
- W2128314627 title "New cosmological and experimental constraints on the CMSSM" @default.
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- W2128314627 doi "https://doi.org/10.1088/1126-6708/2001/08/024" @default.
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