Dark matter spectra from the electroweak to the Planck scale

• DOI: 10.1007/jhep06(2021)121
• Publication Date: 2021-06-19T02:02:25Z
• Authors: Christian W. Bauer; Nicholas L. Rodd; Bryan R. Webber
• Keywords: Cosmology and Nongalactic Astrophysics (astro-ph.CO); FOS: Physical sciences; QC770-798; Atomic; 7. Clean energy; 01 natural sciences; Particle and Plasma Physics; High Energy Physics - Phenomenology (hep-ph); Nuclear and particle physics. Atomic energy. Radioactivity; Perturbative QCD; 0103 physical sciences; Nuclear; Mathematical Physics; High Energy Astrophysical Phenomena (astro-ph.HE); astro-ph.HE; Quantum Physics; Molecular; Particle and High Energy Physics; hep-ph; Nuclear and Plasma Physics; Nuclear & Particles Physics; Nuclear and plasma physics; High Energy Physics - Phenomenology; Particle and high energy physics; 13. Climate action; Mathematical physics; Physical Sciences; astro-ph.CO; Resummation; Regular Article - Theoretical Physics; Astrophysics - High Energy Astrophysical Phenomena; Astrophysics - Cosmology and Nongalactic Astrophysics

Abstract We compute the decay spectrum for dark matter (DM) with masses above the scale of electroweak symmetry breaking, all the way to the Planck scale. For an arbitrary hard process involving a decay to the unbroken standard model, we determine the prompt distribution of stable states including photons, neutrinos, positrons, and antiprotons. These spectra are a crucial ingredient in the search for DM via indirect detection at the highest energies as being probed in current and upcoming experiments including IceCube, HAWC, CTA, and LHAASO. Our approach improves considerably on existing methods, for instance, we include all relevant electroweak interactions.