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Higgsino Dark Matter in a Non-Standard History of the Universe

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arxiv 1907.09235 v3 pith:XR2UGDYR submitted 2019-07-22 hep-ph

Chengcheng Han This is my paper · ORCID
classification hep-ph
keywords higgsinodarkmatterhistorynon-standarduniverselightscalar
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A light higgsino is strongly favored by the naturalness, while as a dark matter candidate it is usually under-abundant. We consider the higgsino production in a non-standard history of the universe, caused by a scalar field with an initially displaced vacuum. We find that given a proper reheating temperature induced by the scalar decay, a light higgsino could provide the correct dark matter relic abundance. On the other hand, a sub-TeV higgsino dark matter, once observed, would be a strong hint of the non-standard thermal history of the universe.

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Cited by 1 Pith paper

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  1. The curtain lowers on directly detectable higgsino dark matter

    hep-ph 2024-12 accept novelty 5.0 of 10

    Using LZ2024 limits, the paper derives new lower bounds on gaugino masses and upper bounds on higgsino mass splittings in decoupled-MSSM higgsino dark matter scenarios, plus projections for the neutrino fog.

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