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Cited by 472

The DOI matches its Crossref record; 44 of the 44 references it cites were found in a registry or an index.

CMB constraints on WIMP annihilation: Energy absorption during the recombination epoch

Open access
Slatyer, Tracy R., Padmanabhan, Nikhil, Finkbeiner, Douglas P.·2009·Physical Review D
DOI 10.1103/physrevd.80.043526
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Abstract

We compute in detail the rate at which energy injected by dark matter (DM) annihilation heats and ionizes the photon-baryon plasma at $z\ensuremath{\sim}1000$, and provide accurate fitting functions over the relevant redshift range for a broad array of annihilation channels and DM masses. The resulting perturbations to the ionization history can be constrained by measurements of the CMB temperature and polarization angular power spectra. We show that models which fit recently measured excesses in 10--1000 GeV electron and positron cosmic rays are already close to the 95% confidence limits from WMAP. The recently launched Planck satellite will be capable of ruling out a wide range of DM explanations for these excesses. In models of dark matter with Sommerfeld-enhanced annihilation, where $⟨\ensuremath{\sigma}v⟩$ rises with decreasing WIMP velocity until some saturation point, the WMAP5 constraints imply that the enhancement must be close to saturation in the neighborhood of the Earth.

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Metadata

Authors
Slatyer, T. R., Padmanabhan, N., & Finkbeiner, D. P.
Venue
Physical Review D
Publisher
American Physical Society (APS)
Published
2009-08-24
Volume
80
Issue
4
ISSN
  • 0556-2821 (ISSN-L)
  • 1550-7998
  • 1550-2368
DOI
10.1103/physrevd.80.043526
OpenAlex
W2110370746
Cited by
472
References
44
FWCI
23.43
Type
journal article
Language
en
Open access
green

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