Bounds on warm dark matter from Schwarzschild primordial black holes

Auffinger, Jérémy; Masina, Isabella; Orlando, Giorgio

doi:10.1140/epjp/s13360-021-01247-9

Cited by 44 publications

(81 citation statements)

References 33 publications

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“…If thew X particles are going to fully contribute to DM, we have to require v X v W . Hence there is a tension with structure formation becausev turns out to be bigger than v W by two orders of magnitude (consistently with the findings of [7,10,24,25]). This rules out all the region of BH domination, and also a small confining portion of radiation domination, as can be seen from the left panel of fig.…”

Section: Constraints On Warm Dmsupporting

confidence: 82%

“…But even for s = 2 (with g X = 5) the tension persists because, as can be seen from fig. 3, one has g Xx2 (0)/x 0 (0) ≈ 0.1: the tension is thus reduced at the level of one order of magnitude, consistently with the findings of [25].…”

Section: Constraints On Warm Dmsupporting

confidence: 82%

“…in fig. 3 of [25], within the SM, g * ,S (t ev ) = 106.75 is constant for M BH < 10 6 g (while it drops down to the value 10.75 at M BH ≈ 10 9 g). Substituting the above expression in eq.…”

Section: Stable Particles As Dark Radiationmentioning

confidence: 85%

“…For DM, one might have expected [25] that the constraints from structure formation that exclude the scenario of BH domination for light DM in the Schwarzschild case, would have been softened. We find instead that, while for the lower spins as s = 0, 1/2, 1 the tension is not changed significantly for all values of the BH spin a * , for s = 2 the tension is even enhanced with increasing values of a * .…”

Section: Discussionmentioning

confidence: 99%

“…If m X c 2 < k B T S BH , the DM candidate belongs to the "light" category, otherwise to the "heavy" one. In particular, the light DM case is subject to strong constraints from structure formation [7,8,10,24,25], so that the BH domination scenario is ruled out. One might guess [25] that the Kerr case would manage to escape such constraints.…”

Section: Stable Particles As Dark Mattermentioning

confidence: 99%

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Dark matter and dark radiation from evaporating primordial black holes

2020

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The mechanism of the generation of dark matter and dark radiation from the evaporation of primordial black holes is very interesting. We consider the case of Kerr black holes to generalize previous results obtained in the Schwarzschild case. For dark matter, the results do not change dramatically and the bounds on warm dark matter apply similarly: in particular, the Kerr case cannot save the scenario of black hole domination for light dark matter. For dark radiation, the expectations for ∆N ef f do not change significantly with respect to the Schwarzschild case, but for an enhancement in the case of spin 2 particles: in the massless case, however, the projected experimental sensitivity would be reached only for extremal black holes.

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Section: Constraints On Warm Dmsupporting

confidence: 82%

Section: Constraints On Warm Dmsupporting

confidence: 82%

Section: Stable Particles As Dark Radiationmentioning

confidence: 85%

Section: Discussionmentioning

confidence: 99%

Section: Stable Particles As Dark Mattermentioning

confidence: 99%

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Dark matter and dark radiation from evaporating primordial black holes

2020

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Black hole evaporation beyond the Standard Model of particle physics

Baker

Thamm

2023

J. High Energ. Phys.

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The observation of an evaporating black hole would provide definitive information on the elementary particles present in nature. In particular, it could discover or exclude particles beyond those present in the standard model of particle physics. We consider a wide range of motivated scenarios beyond the standard model and identify those which would be best probed in the event of an observation. For those models we define representative benchmark parameters and characterise the photon spectra as a function of time. For the supersymmetric benchmark model, where most of the new particles produce secondary photons, we provide secondary spectra and discuss the subtle interplay between faster black hole evaporation and an increased flux of secondary photons. Finally, we discuss the impact of these models on future experimental analysis strategies.

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Primordial black hole archaeology with gravitational waves from cosmic strings

Ghoshal,

Gouttenoire,

Heurtier

et al. 2023

J. High Energ. Phys.

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Light primordial black holes (PBHs) with masses smaller than 109 g (10−24M⊙) evaporate before the onset of Big-Bang nucleosynthesis, rendering their detection rather challenging. If efficiently produced, they may have dominated the universe energy density. We study how such an early matter-dominated era can be probed successfully using gravitational waves (GW) emitted by local and global cosmic strings. While previous studies showed that a matter era generates a single-step suppression of the GW spectrum, we instead find a double-step suppression for local-string GW whose spectral shape provides information on the duration of the matter era. The presence of the two steps in the GW spectrum originates from GW being produced through two events separated in time: loop formation and loop decay, taking place either before or after the matter era. The second step — called the knee — is a novel feature which is universal to any early matter-dominated era and is not only specific to PBHs. Detecting GWs from cosmic strings with LISA, ET, or BBO would set constraints on PBHs with masses between 106 and 109 g for local strings with tension Gμ = 10−11, and PBHs masses between 104 and 109 g for global strings with symmetry-breaking scale η = 1015 GeV. Effects from the spin of PBHs are discussed.

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Bounds on warm dark matter from Schwarzschild primordial black holes

Abstract: We consider light dark matter candidates originated from the evaporation of Schwarzschild primordial black holes, with masses in the range $$10^{-5}$$ 10 - 5 –$$10^9$$ 10 9 g. These candidates are beyond standard model particles with negligible couplings to th… Show more

Cited by 44 publications

References 33 publications

Dark matter and dark radiation from evaporating primordial black holes

Dark matter and dark radiation from evaporating primordial black holes

Black hole evaporation beyond the Standard Model of particle physics

Primordial black hole archaeology with gravitational waves from cosmic strings

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