Event Details

In the Peccei-Quinn symmetry limit of the MSSM singletextensions, there co-exist three light particles: singlet-like scalar h1 and pseudoscalar a1, and singlino-like neutralino \ chi1, all with masses of ~O(0.1-10) GeV. First, we reveal a set of novel decay topologies for the 125 GeV Higgs boson into a pair of neutralinos and discuss their collider search strategies. This category of exotic Higgs decays is characterized by the collider signature: visible objects + MET. As an illustration, we will present the results of the decay topology: h2->\chi1\ chi2, where the bino-like \chi2 decays to h1\chi1 or a1\chi1, and h1/a1->ffbar, with ffbar=\mu+\mu-, bbbar,\tau+\tau-. Additionally, we show the sub-electroweak scale \chi1 can be a good dark matter candidate giving rise to the correct relic abundance in this framework. We also discuss the benchmark points that can accommodate the observed Galactic Center gamma ray excess.

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