Cosmic-ray antiprotons in the AMS-02 era: A sensitive probe of dark matter

Abstract

Cosmic-ray antiprotons are a powerful tool for astroparticle physics. While the bulk of measured antiprotons is consistent with a secondary origin, the precise data of the AMS-02 experiment provides us with encouraging prospects to search for a subdominant primary component, e.g. from dark matter. In this brief review, we discuss recent limits on heavy dark matter as well as a tentative signal from annihilation of dark matter with a mass $\lesssim 100$ GeV. We emphasize the special role of systematic errors that can affect the signal. In particular, we discuss recent progress in the modeling of secondary production cross sections and correlated errors in the AMS-02 data, the dominant ones originating from uncertainties in the cross sections for cosmic-ray absorption in the detector.

17 pages + references, 7 figures; Invited review for Modern Physics Letters A; v2: references added

References in corpus (35)

• An Introduction to PYTHIA 8.2
• Cosmology and Astrophysics of Minimal Dark Matter
• Background model systematics for the Fermi GeV excess
• Discrepant hardening observed in cosmic-ray elemental spectra
• Search for dark matter annihilations towards the inner Galactic halo from 10 years of observations with H.E.S.S
• A Tale of Tails: Dark Matter Interpretations of the Fermi GeV Excess in Light of Background Model Systematics
• Spectral breaks as a signature of cosmic ray induced turbulence in the Galaxy
• Search for photon line-like signatures from Dark Matter annihilations with H.E.S.S
• Constraints on WIMP Dark Matter from the High Energy PAMELA $\bar{p}/p$ data
• Possible Evidence For Dark Matter Annihilation In The Inner Milky Way From The Fermi Gamma Ray Space Telescope
• High-energy antiprotons from old supernova remnants
• Galactic cosmic rays after the AMS-02 observations
• Galactic Center gamma-ray "excess" from an active past of the Galactic Centre?
• Millisecond pulsars and the Galactic Center gamma-ray excess: the importance of luminosity function and secondary emission
• The galactic antiproton spectrum at high energies: background expectation vs. exotic contributions
• AMS-02 beryllium data and its implication for cosmic ray transport
• Scrutinizing the evidence for dark matter in cosmic-ray antiprotons
• Indications for a high-rigidity break in the cosmic-ray diffusion coefficient
• Cosmic-ray transport from AMS-02 B/C data: benchmark models and interpretation
• Updated cosmic-ray and radio constraints on light dark matter: Implications for the GeV gamma-ray excess at the Galactic center
• Cosmic Ray Antiprotons at High Energies
• What Does The PAMELA Antiproton Spectrum Tell Us About Dark Matter?
• New calculation of antiproton production by cosmic ray protons and nuclei
• Antiproton constraints on the GeV gamma-ray excess: a comprehensive analysis
• Galactic cosmic-ray propagation in the light of AMS-02: I. Analysis of protons, helium, and antiprotons
• Prospects for Heavy WIMP Dark Matter with CTA: the Wino and Higgsino
• Galactic halo size in the light of recent AMS-02 data
• The Cosmic Ray Antiproton Background for AMS-02
• Time dependence of the electron and positron components of the cosmic radiation measured by the PAMELA experiment between July 2006 and December 2015
• Dark matter or correlated errors: Systematics of the AMS-02 antiproton excess
• An empirical modification of the force field approach to describe the modulation of galactic cosmic rays close to Earth in a broad range of rigidities
• A fussy revisitation of antiprotons as a tool for Dark Matter searches
• Can AMS-02 discriminate the origin of an anti-proton signal?
• Antiproton signatures from astrophysical and dark matter sources at the galactic center
• The HelMod Model in the Works for Inner and Outer Heliosphere: from AMS to Voyager Probes Observations

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• Search for Dark Matter Annihilation to gamma-rays from SPT-SZ selected Galaxy Clusters
• Reanalysis of the Systematic Uncertainties in Cosmic-Ray Antiproton Flux
• Direct measurements of cosmic rays and their possible interpretations
• $\overline{\text{D}}$arkRayNet: Emulation of cosmic-ray antideuteron fluxes from dark matter
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