Dark matter in very supersymmetric dark sectors

Dery, Avital; Dror, Jeff A.; Haskins, Laurel Stephenson; Hochberg, Yonit; Kuflik, Eric

doi:10.1103/physrevd.99.095023

Cited by 9 publications

(3 citation statements)

References 54 publications

(76 reference statements)

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“…Co-Decaying DM (Co-Decay) is one possible alternative to the standard WIMP paradigm. As we review below, Co-Decay [5][6][7] (and also 'cannibalistic' DM [8,9]) posits that DM decoupled in the very early universe from the SM while relativistic. The dark sector then evolves to become non-relativistic and has a temperature differing from the SM.…”

Section: Jcap11(2019)014mentioning

confidence: 99%

Primordial black holes and Co-Decaying dark matter

Georg

Melcher

Watson

2019

J. Cosmol. Astropart. Phys.

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Models of Co-Decaying dark matter lead to an early matter dominated epoch -prior to BBNwhich results in an enhancement of the growth of dark matter substructure. If these primordial structures collapse further they can form primordial black holes providing an additional dark matter candidate. We derive the mass fraction in these black holes (which is not monochromatic) and consider observational constraints on how much of the dark matter could be comprised in these relics. We find that in many cases they can be a significant fraction of the dark matter.Interestingly, the masses of these black holes can be near the solar-mass range providing a new mechanism for producing black holes like those recently detected by LIGO. *

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Section: Jcap11(2019)014mentioning

confidence: 99%

Primordial black holes and Co-Decaying dark matter

Georg

Melcher

Watson

2019

J. Cosmol. Astropart. Phys.

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“…In parallel, novel DM direct detection signals have been proposed which can be constrained by current detectors such as inelastic scattering [29], bremsstrahlung [30], exothermic DM [31][32][33], boosted DM [34,35], and selfdestructing DM [36]. These signals are often present in DM models outside the thermal relic paradigm for which there is a range of possible mechanisms that can explain the observed DM relic abundance (see e.g., [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55]).…”

Section: Introductionmentioning

confidence: 99%

Absorption of fermionic dark matter by nuclear targets

Dror

Elor

McGehee

2020

J. High Energ. Phys.

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Absorption of fermionic dark matter leads to a range of distinct and novel signatures at dark matter direct detection and neutrino experiments. We study the possible signals from fermionic absorption by nuclear targets, which we divide into two classes of four Fermi operators: neutral and charged current. In the neutral current signal, dark matter is absorbed by a target nucleus and a neutrino is emitted. This results in a characteristically different nuclear recoil energy spectrum from that of elastic scattering. The charged current channel leads to induced β decays in isotopes which are stable in vacuum as well as shifts of the kinematic endpoint of β spectra in unstable isotopes. To confirm the possibility of observing these signals in light of other constraints, we introduce UV completions of example higher dimensional operators that lead to fermionic absorption signals and study their phenomenology. Most prominently, dark matter which exhibits fermionic absorption signals is necessarily unstable leading to stringent bounds from indirect detection searches. Nevertheless, we find a large viable parameter space in which dark matter is sufficiently long lived and detectable in current and future experiments.

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“…Instead we admit such a sector actually undergo different thermal history depending on the size of λ. It is thus equivalent to embed the hidden sector into Co-Decaying dark matter mechanism [52,53] or Impeded dark matter [54] and put BBN as consistency check for mediator. The combination of hidden sector and long-range interaction can affect the dark matter relic density to a large extent which is our basic motivation in this paper.…”

Section: Introductionmentioning

confidence: 99%

Thermal Relic of Self-Interacting Dark Matter with Retarded Decay of Mediator

Zhu,

Abdughani

2021

Preprint

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Light mediator to dark matter is favorable for several phenomena in astroparticle physics such as core-cusp problem. Such a light mediator can be decoupled from Standard Model in order not to threaten direct detection constraint, which is generally realized by retard decay of mediator. Their out-of-equilibrium decays can alter the conventional evolution of dark matter via entropy dilution and BBN constraint. Dark Matter in this manner typically requires precision calculation of freeze-out process considering different temperatures evolution. If the mediator is light enough, dark matter bound state can be formed by emitting a mediator radiatively as well as sommerfled enhancement. The radiative bound state formation process is expected to affect the dark matter annihilation cross section at percent level. We also put the combination of large mass splitting between dark matter and mediator and retard decay of mediator on the same theoretical footing, discuss the implication for dark matter relic density in this hidden sector. We study this type of model and illustrate its property by considering general next-to-minimal supersymmetric standard model (NMSSM).

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Dark matter in very supersymmetric dark sectors

Cited by 9 publications

References 54 publications

Primordial black holes and Co-Decaying dark matter

Primordial black holes and Co-Decaying dark matter

Absorption of fermionic dark matter by nuclear targets

Thermal Relic of Self-Interacting Dark Matter with Retarded Decay of Mediator

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