Enhanced anti-deuteron Dark Matter signal and the implications of PAMELA

2009/08/31 by M. Kadastik, Mario Kadastik, Martti Raidal +3 · 3 citations
Chemistry · Physics and Astronomy · #Annihilation #Astronomy #Astrophysics #COSMIC cancer database #Chemistry #Coalescence (physics) #Cosmic ray #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Deuterium #Flux (metallurgy) #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Production rate #Proton #astro-ph.HE #hep-ph

paper · pdf · doi:10.1016/j.physletb.2009.12.005

published as Phys.Lett.B683:248-254,2010 · 13 pages, 7 figures. Final version

arxiv created 2009/12/05 · openalex publication_date 2009/12/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We show that the jet structure of DM annihilation or decay products enhances the d¯ production rate by orders of magnitude compared to the previous computations done assuming a spherically symmetric coalescence model. In particular, in the limit of heavy DM, M≫mp, we get a constant rather than 1/M2 suppressed d¯ production rate. Therefore, a detectable d¯ signal is compatible with the lack of an excess in the p¯ PAMELA flux. Most importantly, cosmic d¯ searches become sensitive to the annihilations or decays of heavy DM, suggesting to extend the experimental d¯ searches above the O(1) GeV scale.

Citations

• Explosive Dark Matter Annihilation
• Low energy antideuterons: shedding light on dark matter
• Antideuteron fluxes from dark matter annihilation in diffusion models
• An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV
• Deuteron and anti-deuteron production in e+e− collisions at the Z resonance
• Convergence and scatter of cluster density profiles
• Antideuterons as a signature of supersymmetric dark matter
• Energy Spectrum of Cosmic-Ray Electrons at TeV Energies
• A theory of dark matter
• Minimal Dark Matter predictions for galactic positrons, anti-protons, photons

Cited by

• Antideuterons and antihelium nuclei from annihilating dark matter
• Dark matter searches with cosmic antideuterons: status and perspectives
• Deuteron and antideuteron production simulation in cosmic-ray interactions