Erratum: Dark-matter electric and magnetic dipole moments [Phys. Rev. DPRVDAQ0556-2821<b>70</b>, 083501 (2004)10.1103/PhysRevD.70.083501]

Sigurdson, Kris; Doran, Michael; Kurylov, Andriy; Caldwell, Robert R.; Kamionkowski, Marc

doi:10.1103/physrevd.73.089903

Cited by 137 publications

(187 citation statements)

References 28 publications

(38 reference statements)

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“…As we shall see, these operators are probed particularly well by searches for gamma ray lines due to the direct coupling of the dark matter to the photon [30][31][32][33][34]. We note that there has been recent interest in dark matter with dipole interactions, which have the potential to reconcile the DAMA signal while remaining consistent with the null search results from CDMS and XENON [35][36][37][38][39].…”

Section: Effective Theory Of Wimp Interactionsmentioning

confidence: 58%

Gamma ray line constraints on effective theories of dark matter

et al. 2011

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A monochromatic gamma ray line results when dark matter particles in the galactic halo annihilate to produce a two body final state which includes a photon. Such a signal is very distinctive from astrophysical backgrounds, and thus represents an incisive probe of theories of dark matter.We compare the recent null results of searches for gamma ray lines in the galactic center and other regions of the sky with the predictions of effective theories describing the interactions of dark matter particles with the Standard Model. We find that the null results of these searches provide constraints on the nature of dark matter interactions with ordinary matter which are complementary to constraints from other observables, and stronger than collider constraints in some cases.

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Section: Effective Theory Of Wimp Interactionsmentioning

confidence: 58%

Gamma ray line constraints on effective theories of dark matter

et al. 2011

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“…The consequences of DM interactions with radiation have been computed in the linear regime (Boehm et al 2002;Sigurdson et al 2004;Wilkinson et al 2013Wilkinson et al , 2014. The γCDM matter power spectrum is damped relative to that of CDM beyond a scale that depends on the interaction cross section.…”

Section: Interacting Dmmentioning

confidence: 99%

Using the Milky Way satellites to study interactions between cold dark matter and radiation

Bœhm¹,

Schewtschenko²,

Wilkinson³

et al. 2014

Monthly Notices of the Royal Astronomical Society: Letters

117

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The cold dark matter (CDM) model faces persistent challenges on small scales. In particular, taken at face value, the model significantly overestimates the number of satellite galaxies around the Milky Way. Attempts to solve this problem remain open to debate and have even led some to abandon CDM altogether. However, current simulations are limited by the assumption that dark matter feels only gravity. Here, we show that including interactions between CDM and radiation (photons or neutrinos) leads to a dramatic reduction in the number of satellite galaxies, alleviating the Milky Way satellite problem and indicating that physics beyond gravity may be essential to make accurate predictions of structure formation on small scales. The methodology introduced here gives constraints on dark matter interactions that are significantly improved over those from the cosmic microwave background.

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“…When the baryon-photon fluid is tightly coupled at early times, the perturbation equations can be expanded in powers of τ c [5,21], yielding…”

Section: Formalismmentioning

confidence: 99%

“…The CMB power spectra in the presence of DMbaryon interactions are governed by the following sets of equations [21]:…”

Section: Formalismmentioning

confidence: 99%

Early-Universe constraints on dark matter-baryon scattering and their implications for a global 21 cm signal

2018

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We present and compare several cosmological constraints on the cross section for elastic scattering between dark matter (DM) and baryons, for cross sections with a range of power-law dependences on the DM-baryon relative velocity v, especially focusing on the case of σ ∝ v −4 . We study constraints spanning a wide range of epochs in cosmological history, from prerecombination distortions to the blackbody spectrum and anisotropies of the cosmic microwave background (CMB), to modifications to the intergalactic medium temperature and the resulting 21 cm signal, and discuss the allowed signals in the latter channels given the constraints from the former. We improve previous constraints on DM-baryon scattering from the CMB anisotropies, demonstrate via principal component analysis that the effect on the CMB can be written as a simple function of DM mass for v −4 scattering, and map out the redshifts dominating this signal. We show that given high-redshift constraints on DM-baryon scattering, a v −4 scaling of the cross section for light DM would be sufficient to explain the deep 21 cm absorption trough recently claimed by the Experiment to Detect the Reionization Step, if 100% of the DM scatters with baryons; we estimate the minimal necessary velocity scaling and find that it is close to v −4 . For millicharged DM models proposed to explain the observation, where only a small fraction of the DM interacts, we estimate that a PIXIE-like future experiment measuring CMB spectral distortion could test the relevant parameter space.

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Erratum: Dark-matter electric and magnetic dipole moments [Phys. Rev. DPRVDAQ0556-282170, 083501 (2004)10.1103/PhysRevD.70.083501]

Cited by 137 publications

References 28 publications

Gamma ray line constraints on effective theories of dark matter

Gamma ray line constraints on effective theories of dark matter

Using the Milky Way satellites to study interactions between cold dark matter and radiation

Early-Universe constraints on dark matter-baryon scattering and their implications for a global 21 cm signal

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