Low-temperature freeze-in lets gravity-mediated dark matter stay viable with heavy spin-two mediators and light dark matter, avoiding the tight constraints of the thermal relic picture.
On the compatibility of the diboson excess with a gg-initiated composite sector
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abstract
In this paper we explore the possibility that recent results by ATLAS and CMS searching for heavy resonances decaying into bosons could be a first hint of a new sector of pure-gauge confining physics, possibly linked to the origin of the Higgs as a Composite Higgs. The lightest resonances (glueballs) of this new sector would be neutral, spin-zero and -two, and their behaviour would resemble that of a radion and a massive graviton of extra-dimensions. We outline how LHC8 data could be used to improve sensitivity on this scenario, as well as future characterization during the LHC13 run.
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Gravity-Mediated Dark Matter at a low reheating temperature
Low-temperature freeze-in lets gravity-mediated dark matter stay viable with heavy spin-two mediators and light dark matter, avoiding the tight constraints of the thermal relic picture.