Indirect searches of dark matter via polynomial spectral features

@article{GarciaCely2016IndirectSO,
  title={Indirect searches of dark matter via polynomial spectral features},
  author={Camilo Garcia-Cely and Julian Heeck},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2016},
  volume={2016},
  pages={023 - 023}
}
We derive the spectra arising from non-relativistic dark matter annihilations or decays into intermediary particles with arbitrary spin, which subsequently produce neutrinos or photons via two-body decays. Our approach is model independent and predicts spectral features restricted to a kinematic box. The overall shape within that box is a polynomial determined by the polarization of the decaying particle. We illustrate our findings with two examples. First, with the neutrino spectra arising… 

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References

SHOWING 1-10 OF 89 REFERENCES

Probing the inert doublet dark matter model with Cherenkov telescopes

We present a detailed study of the annihilation signals of the inert dark matter doublet model in its high mass regime. Concretely, we study the prospects to observe gamma-ray signals of the model in

Gamma-ray limits on neutrino lines

Monochromatic neutrinos from dark matter annihilations (χχ→ νν̄) are always produced in association with a gamma-ray spectrum generated by electroweak bremsstrahlung. Consequently, these neutrino

New gamma-ray contributions to supersymmetric dark matter annihilation

We compute the electromagnetic radiative corrections to all leading annihilation processes which may occur in the Galactic dark matter halo, for dark matter in the framework of supersymmetric

Dark matter constraints from box-shaped gamma-ray features

The observation of a sharp spectral feature in the gamma-ray sky would be one of the cleanest ways to identify dark matter and pinpoint its properties. Over the years a lot of attention has been paid

The diphoton resonance as a gravity mediator of dark matter

Cosmological and astrophysical signatures of dark matter annihilations into pseudo-Goldstone bosons

We investigate a model where the dark matter particle is a chiral fermion field charged under a global U(1) symmetry which is assumed to be spontaneously broken, leading to a pseudo-Goldstone boson

Diphoton resonance confronts dark matter

A bstractAs an interpretation of the 750 GeV diphoton excesses recently reported by both ATLAS and CMS collaborations, we consider a simple extension of the Standard Model with a Dirac fermion dark

Di-photon excess illuminates dark matter

A bstractWe propose a simplified model of dark matter with a scalar mediator to accommodate the di-photon excess recently observed by the ATLAS and CMS collaborations. Decays of the resonance into
...