Supernova Constraint on Self-Interacting Dark Sector Particles

Sung, Allan; Guo, Gang; Wu, Meng-Ru

doi:10.48550/arxiv.2102.04601

Cited by 3 publications

(3 citation statements)

References 62 publications

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“…1), the inverse decay process of χ χ → φ L dominates the DM absorption, and the dark sector luminosity is much smaller than the neutrino luminosity (see, e.g., Ref. [53]). Thus, the coupling parameters of concern are not limited by the energy loss from supernovae.…”

Section: Analysis and Testmentioning

confidence: 99%

A dark leptophilic scalar with the updated muon $$g-2$$ anomaly

Jia

2022

Eur. Phys. J. C

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The muon $$g-2$$ g - 2 anomaly was strengthened by recent experimental results at Fermilab, which may be signatures of new physics. A scenario of leptophilic scalar $$\phi _L$$ ϕ L accounting for the muon $$g-2$$ g - 2 anomaly is investigated in this paper. Although a light $$\phi _L$$ ϕ L mainly decaying into standard model (SM) particles has been excluded by experiments, a dark leptophilic scalar $$\phi _L$$ ϕ L predominantly decaying into invisible fermionic dark matter (DM) $$\chi {\bar{\chi }}$$ χ χ ¯ is still allowed. Considering the decay mode $$\phi _L \rightarrow \chi {\bar{\chi }}$$ ϕ L → χ χ ¯ opened (here $$m_{\phi _L} = 3 m_\chi $$ m ϕ L = 3 m χ ), the coupling preferred by the muon $$g-2$$ g - 2 and the $$\phi _L-\chi $$ ϕ L - χ coupling are derived. The light/heavy $$\phi _L$$ ϕ L (roughly 1 GeV as a benchmark value) can be tested by future experiments via DM/SM decay modes, and the contribution of $$\phi _L$$ ϕ L to the anomalous magnetic moment of the tau lepton could be investigated at lepton colliders. The search for $$\chi $$ χ via $$\chi $$ χ -electron scattering in direct detection of DM is not sensitive due to a tiny $$\phi _L$$ ϕ L -electron coupling, especially for $$m_\chi > rsim m_\mu $$ m χ ≳ m μ .

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Section: Analysis and Testmentioning

confidence: 99%

A dark leptophilic scalar with the updated muon $$g-2$$ anomaly

Jia

2022

Eur. Phys. J. C

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“…From left to right, m V /m χ = 10, 1, 0.1. Various constraints from XENON1T [8], XENON LDM [9,10], SIDM [44][45][46][47][48], SN1987A [67,68],…”

Section: Implication Of Dm On Ns Temperaturementioning

confidence: 99%

Exploring dark sector parameters in light of neutron star temperatures

Lin,

Lin

2021

Preprint

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Neutron star (NS) as the dark matter (DM) probe has gained a broad attention recently, either from heating due to DM annihilation or its stability under the presence of DM. In this work, we investigate spin-1/2 fermionic DM χ charged under the U (1) X in the dark sector. The massive gauge boson V of U (1) X gauge group can be produced in NS via DM annihilation. The produced gauge boson can decay into Standard Model (SM) particles before it exits NS, despite its tiny couplings to SM particles. Thus, we perform a systematic study on χ χ → 2V → 4SM as a new heating mechanism for NS in addition to χ χ → 2SM and kinetic heating from DM-baryon scattering. The self-trapping due to χV scattering is also considered. We assume the general framework that both kinetic and mass mixing terms between V and SM gauge bosons are present. This allows both vector and axial-vector couplings between V and SM fermions even for m V m Z . Notably, the contribution from axial-vector coupling is not negligible when particles scatter relativistically.We point out that the above approaches to DM-induced NS heating are not yet adopted in recent analyses. Detectabilities of the aforementioned effects to the NS surface temperature by the future telescopes are discussed as well.

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“…These include: searches for the visible decay of A at beam experiments [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32], limits on the emission of light particles from the cooling of SN1987a [33][34][35][36][37] (although arguments made in Refs. [38,39] may alter or remove these limits), as well as joint BBN and CMB constraints on electromagnetically coupled DM, assuming no other dark sector effects on either of these observables [40]. We expect direct-detection limits to be irrelevant: DM scattering with electrons and nucleons occurs only at one-loop for the ground state (with upscattering being kinematically forbidden), and is suppressed by at least an additional factor of 2 relative to the symmetric scattering rate, while the scattering rate of excited states is suppressed by their tiny abundance [41,42].…”

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confidence: 99%

New Thermal Relic Targets for Inelastic Vector-Portal Dark Matter

Fitzpatrick,

Liu,

Slatyer

et al. 2021

Preprint

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We examine the vector-portal inelastic dark matter (DM) model with DM mass mχ and dark photon mass m A , in the 'forbidden dark matter' regime where 1 m A /mχ 2, carefully tracking the dark sector temperature throughout freezeout. The inelastic nature of the dark sector relaxes the stringent cosmic microwave background (CMB) and self-interaction constraints compared to symmetric DM models. We determine the CMB limits on both annihilations involving excited states and annihilation into e + e − through initial-state-radiation of an A , as well as limits on the DM self-scattering, which proceeds at the one-loop level. The unconstrained parameter space serves as an ideal target for accelerator A searches, and provides a DM self-interaction cross section that is large enough to observably impact small-scale structure.

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Supernova Constraint on Self-Interacting Dark Sector Particles

Cited by 3 publications

References 62 publications

A dark leptophilic scalar with the updated muon $$g-2$$ anomaly

A dark leptophilic scalar with the updated muon $$g-2$$ anomaly

Exploring dark sector parameters in light of neutron star temperatures

New Thermal Relic Targets for Inelastic Vector-Portal Dark Matter

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