$Υ$ Decays into Light Scalar Dark Matter - High Energy Physics - PhenomenologyReport as inadecuate




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Abstract: We examine decays of a spin-1 bottomonium into a pair of light scalar DarkMatter DM particles, assuming that Dark Matter is produced due to exchange ofheavy degrees of freedom. We perform a model-independent analysis and deriveformulae for the branching ratios of these decays. We confront our calculationresults with the experimental data. We show that the considered branchingratios are within the reach of the present BaBaR experimental sensitivity.Thus, Dark Matter production in Upsilon decays leads to constraints onparameters of various models containing a light spin-0 DM particle. Weillustrate this for the models with a -WIMPless miracle-, in particular for aGauge Mediated SUSY breaking scenario, with a spin-0 DM particle in the hiddensector. Another example considered is the type II 2HDM with a scalar DMparticle.



Author: Gagik K. Yeghiyan

Source: https://arxiv.org/



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