Light higgsino dark matter from non-thermal cosmology
- Intl Centre for Theoretical Physics (ICTP), Trieste (Italy)
- Intl Centre for Theoretical Physics (ICTP), Trieste (Italy); Univ. of Bologna (Italy); National Inst. of Nuclear Physics (INFN), Bologna (Italy)
- Texas A & M Univ., College Station, TX (United States), Dept. of Physics and Astronomy
- Univ. of Bologna (Italy); National Inst. of Nuclear Physics (INFN), Bologna (Italy)
- Intl Centre for Theoretical Physics (ICTP), Trieste (Italy); Univ. of Cambridge (United Kingdom)
We study the scenario of higgsino dark matter in the context of a non-standard cosmology with a period of matter domination prior to Big Bang nucleosynthesis. Matter domination changes the dark matter relic abundance if it ends via reheating to a temperature below the higgsino thermal freeze-out temperature. We perform a model independent analysis of the higgsino dark matter production in such scenario. We show that light higgsino-type dark matter is possible for reheating temperatures close to 1 GeV. We study the impact of dark matter indirect detection and collider physics in this context. We show that Fermi-LAT data rule out non-thermal higgsinos with masses below 300 GeV. A future indirect dark matter searches from Fermi-LAT and CTA will be able to cover essentially the full parameter space. Contrary to the thermal case, collider signals from a 100 TeV collider could fully test the non-thermal higgsino scenario. In the second part of the paper we discuss the motivation of such non-thermal cosmology from the perspective of string theory with late-time decaying moduli for both KKLT and LVS moduli stabilisation mechanisms. Finally, we describe the impact of embedding higgsino dark matter in these scenarios.
- Research Organization:
- Texas A & M Univ., College Station, TX (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- FG02-13ER42020; SC0010813
- OSTI ID:
- 1395342
- Journal Information:
- Journal of High Energy Physics (Online), Vol. 2016, Issue 11; ISSN 1029-8479
- Publisher:
- Springer BerlinCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Study of dark matter physics in non-universal gaugino mass scenario
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journal | August 2017 |
Invisible decay of the Higgs boson in the context of a thermal and nonthermal relic in MSSM
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journal | May 2017 |
Phenomenology of doublet-triplet fermionic dark matter in nonstandard cosmology and multicomponent dark sectors
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journal | November 2018 |
On Inflationary Scale, Reheating Scale and Pre-BBN Cosmology with Scalar Fields | text | January 2018 |
Neutralino Dark Matter in Scenarios with Early Matter Domination | text | January 2018 |
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