Minimal Dark Matter predictions for galactic positrons, anti-protons, photons

2008/02/29 by Marco Cirelli, Roberto Franceschini, Alessandro Strumia +1 · 1 citation
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #astro-ph #hep-ph

paper · pdf · doi:10.1016/j.nuclphysb.2008.03.013

published as Nucl.Phys.B800:204-220,2008 · 16 pages, 6 figures, 3 tables of fit parameters. v3: in an addendum at page 17 we show that the Minimal Dark Matter prediction agrees with the anomaly in the positron spectrum announced by the PAMELA collaboration

openalex publication_date 2008/03/31 · arxiv created 2008/08/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We present the energy spectra of the fluxes of positrons, anti-protons and photons generated by Dark Matter annihilations in our galaxy, as univocally predicted by the model of Minimal Dark Matter. Due to multi-TeV masses and to the Sommerfeld enhancement of the annihilation cross section, distinctive signals are generated above the background, even with a modest astrophysical boost factor, in the range of energies soon to be explored by cosmic ray experiments.

Citations

• Possible evidence for dark matter annihilations from the excess microwave emission around the center of the Galaxy seen by the Wilkinson Microwave Anisotropy Probe
• Cosmic Antiprotons as a Probe for Supersymmetric Dark Matter?
• Antiproton and positron signal enhancement in dark matter minispikes scenarios
• Minimal dark matter
• Galactic antiproton spectrum at high energies: Background expectation versus exotic contributions
• Which fraction of the measured cosmic-ray antiprotons might be due to neutralino annihilation in the galactic halo?
• Small-scale clumps in the galactic halo and dark matter annihilation
• The Alpha Magnetic Spectrometer (AMS) on the International Space Station: Part I – results from the test flight on the space shuttle
• Cosmological constraints from the SDSS luminous red galaxies

Cited by

• Alessandro Strumia [wikipedia]