Photon spectra from WIMP annihilation
J. A. R. Cembranos, A. de la Cruz-Dombriz, A. Dobado, R. A. Lineros, and A. L. Maroto
TL;DR
This paper provides detailed photon spectra from WIMP dark matter annihilation into Standard Model particles, using extensive simulations and analytical fits, aiding in indirect dark matter detection efforts.
Contribution
It offers comprehensive, model-independent photon spectra for various WIMP masses and annihilation channels, derived from extensive Monte Carlo simulations.
Findings
Complete photon spectra for WIMP annihilation channels
Analytical fitting formulas for spectra across WIMP masses
Results applicable to indirect dark matter detection
Abstract
If the present dark matter in the Universe annihilates into Standard Model particles, it must contribute to the fluxes of cosmic rays that are detected on the Earth, and in particular, to the observed gamma ray fluxes. The magnitude of such contribution depends on the particular dark matter candidate, but certain features of the produced photon spectra may be analyzed in a rather model-independent fashion. In this work we provide the complete photon spectra coming from WIMP annihilation into Standard Model particle-antiparticle pairs obtained by extensive Monte Carlo simulations. We present results for each individual annihilation channel and provide analytical fitting formulae for the different spectra for a wide range of WIMP masses.
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