Where do the AMS-02 antihelium events come from?

V Poulin, P Salati, I Cholis, M Kamionkowski, J Silk - Physical Review D, 2019 - APS
We discuss the origin of the antihelium-3 and-4 events possibly detected by AMS-02. Using
up-to-date semianalytical tools, we show that spallation from primary hydrogen and helium …

Origin of the tentative AMS antihelium events

A Coogan, S Profumo - Physical Review D, 2017 - APS
We demonstrate that the tentative detection of a few antihelium events with the Alpha
Magnetic Spectrometer (AMS) on board the International Space Station can, in principle, be …

Dark Matter Annihilation Can Produce a Detectable Antihelium Flux through Decays

MW Winkler, T Linden - Physical Review Letters, 2021 - APS
Recent observations by the Alpha Magnetic Spectrometer (AMS-02) have tentatively
detected a handful of cosmic-ray antihelium events. Such events have long been considered …

Anti-helium from dark matter annihilations

M Cirelli, N Fornengo, M Taoso, A Vittino - Journal of High Energy Physics, 2014 - Springer
A bstract Galactic Dark Matter (DM) annihilations can produce cosmic-ray anti-nuclei via the
nuclear coalescence of the anti-protons and anti-neutrons originated directly from the …

Antihelium from dark matter

E Carlson, A Coogan, T Linden, S Profumo, A Ibarra… - Physical Review D, 2014 - APS
Cosmic-ray antinuclei provide a promising discovery channel for the indirect detection of
particle dark matter. Hadron showers produced by the pair annihilation or decay of Galactic …

Prospects to verify a possible dark matter hint in cosmic antiprotons with antideuterons and antihelium

M Korsmeier, F Donato, N Fornengo - Physical Review D, 2018 - APS
Cosmic rays are an important tool to study dark matter (DM) annihilation in our Galaxy.
Recently, a possible hint for dark matter annihilation was found in the antiproton spectrum …

Dark matter annihilation and its effect on CMB and Hydrogen 21 cm observations

A Natarajan, DJ Schwarz - Physical Review D—Particles, Fields, Gravitation …, 2009 - APS
If dark matter is made up of weakly interacting massive particles, the annihilation of these
particles in halos results in energy being released, some of which is absorbed by gas …

Novel dark matter constraints from antiprotons in light of AMS-02

A Cuoco, M Krämer, M Korsmeier - Physical Review Letters, 2017 - APS
We evaluate dark matter (DM) limits from cosmic-ray antiproton observations using the
recent precise AMS-02 measurements. We properly take into account cosmic-ray …

Cosmic antihelium-3 nuclei sensitivity of the GAPS experiment

N Saffold, T Aramaki, R Bird, M Boezio, SE Boggs… - Astroparticle …, 2021 - Elsevier
Abstract The General Antiparticle Spectrometer (GAPS) is an Antarctic balloon experiment
designed for low-energy (0.1–0.3 GeV/n) cosmic antinuclei as signatures of dark matter …

AMS-02 antiprotons, at last! Secondary astrophysical component and immediate implications for Dark Matter

G Giesen, M Boudaud, Y Génolini… - … of Cosmology and …, 2015 - iopscience.iop.org
Using the updated proton and helium fluxes just released by the AMS-02 experiment we
reevaluate the secondary astrophysical antiproton to proton ratio and its uncertainties, and …