Supernova signals of light dark matter

DeRocco, William; Graham, Peter W.; Kasen, Daniel; Marques-Tavares, Gustavo; Rajendran, Surjeet

doi:10.1103/physrevd.100.075018

Cited by 53 publications

(75 citation statements)

References 36 publications

(49 reference statements)

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“…In addition, if any of the dark particles is light enough, they can be produced in supernovae. Since this thermally produced population is much hotter than the halo DM, it could be observed with direct detection experiments [157].…”

Section: Potentially Complementary Observablesmentioning

confidence: 92%

Self-interacting dark matter without prejudice

et al. 2020

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The existence of dark matter particles that carry phenomenologically relevant self-interaction cross sections mediated by light dark sector states is considered to be severely constrained through a combination of experimental and observational data. The conclusion is based on the assumption of specific dark matter production mechanisms such as thermal freeze-out together with an extrapolation of a standard cosmological history beyond the epoch of primordial nucleosynthesis. In this work, we drop these assumptions and examine the scenario from the perspective of the current firm knowledge we have results from direct and indirect dark matter searches and cosmological and astrophysical observations, without additional assumptions on dark matter genesis or the thermal state of the very early universe. We show that even in the minimal setup, where dark matter particles self-interact via a kinetically mixed vector mediator, a significant amount of parameter space remains allowed. Interestingly, however, these parameter regions imply a metastable, light mediator, which in turn calls for modified search strategies.

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Section: Potentially Complementary Observablesmentioning

confidence: 92%

Self-interacting dark matter without prejudice

et al. 2020

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“…refs. [19,[86][87][88][89][90][91][92][93][94][95][96][97][98][99][100][101][102][103][104]). Typically, the bound arises from the requirement that the energy loss from a star to new light states should not exceed the energy loss to neutrinos.…”

Section: Limits From Supernova 1987a and Stellar Coolingmentioning

confidence: 99%

“…The 10 events reach by SHiP is shown in dashed orange. The purple region represents the limit from cooling of SN1987A [96]. The normalised splitting δ χ is defined in eq.…”

Section: Vector Operatormentioning

confidence: 99%

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Light dark sectors through the Fermion portal

Ellis

You

2020

J. High Energ. Phys.

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Pairs of Standard Model fermions form dimension-3 singlet operators that can couple to new dark sector states. This "fermion portal" is to be contrasted with the lower-dimensional Higgs, vector and neutrino singlet portals. We characterise its distinct phenomenology and place effective field theory bounds on this framework, focusing on the case of fermion portals to a pair of light dark sector fermions. We obtain current and projected limits on the dimension-6 effective operator scale from a variety of meson decay experiments, missing energy and long-lived particle searches at colliders, as well as astrophysical and cosmological bounds. The DarkEFT public code is made available for recasting these limits, which we illustrate with various examples including an integratedout heavy dark photon.

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“…They are natural ingredients of the dark sector-either as dark matter candidates or as mediators to the dark matter [1]. They may also play a role in solving the gauge hierarchy and vacuum energy problems through cosmological evolution and could conceivably be responsible for powering the shock wave necessary to trigger type II supernovae [2,3]. High energy colliders do not have the statistical sensitivity to search for these particles-while they operate well above the energy threshold necessary to produce these particles, colliders do not have the luminosity to overcome the small coupling of these particles.…”

Section: Introductionmentioning

confidence: 99%

Invisible decay modes in nuclear gamma cascades

et al. 2019

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We propose a high statistics experiment to search for invisible decay modes in nuclear gamma cascades. A radioactive source (such as 60 Co or 24 Na) that triggers gamma cascades is placed in the middle of a large, hermetically sealed scintillation detector, enabling photon identification with high accuracy. Invisible modes are identified by establishing the absence of a photon in a well-identified gamma cascade. We propose the use of fast scintillators with nanosecond timing resolution, permitting event rates as high as 10 7 Hz. Our analysis of the feasibility of this setup indicates that branching fractions as small as 10 −12 − 10 −14 can be probed. This experimental protocol benefits from the fact that a search for invisible modes is penalized for weak coupling only in the production of the new particle. If successfully implemented, this experiment is an exquisite probe of particles with mass below approximately 4 MeV that lie in the poorly constrained supernova "trapping window" that exists between 100 keV and 30 MeV. Such particles have been invoked as mediators between dark matter and nucleons, explain the proton radius and ðg − 2Þ μ anomalies, and potentially power the shock wave in type II supernovae. The hadronic axion could also be probed with modifications to the proposed setup.

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Supernova signals of light dark matter

Cited by 53 publications

References 36 publications

Self-interacting dark matter without prejudice

Self-interacting dark matter without prejudice

Light dark sectors through the Fermion portal

Invisible decay modes in nuclear gamma cascades

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