A systematic study on the cosmic ray antiproton flux

Abstract

Recently the AMS-02 collaboration has published the measurement of the cosmic antiproton to proton ratio $\bar{p}/p$ and the $\bar{p}$ flux with a high precision up to $\sim 450\mathrm{GeV}$. In this work, we perform a systematic analysis of the secondary antiproton flux generated by the cosmic ray interaction with the interstellar gas. The uncertainty of the prediction originates from the cosmic ray propagation process and the hadronic interaction models. Although the cosmic ray propagation parameters have been well controlled by the AMS-02 $B/C$ ratio data for a specified model, different propagation models can not be discriminated by the $B/C$ data. The $\bar{p}$ flux is also calculated for several hadronic interaction models, which are generally adopted by the cosmic ray community. However, the results for different hadronic models do not converge. We find the EPOS LHC model, which seems to fit the collider data very well, predicts a slightly lower $\bar{p}/p$ ratio than the AMS-02 data at the high energy end. Finally we derive the constraints on the dark matter annihilation cross section from the AMS-02 $\bar{p}/p$ ratio for different propagation and hadronic interaction models.

21 pages, 11 figures, 2 tables. arXiv admin note: text overlap with arXiv:1504.07230

References in corpus (16)

• PYTHIA 6.4 Physics and Manual
• Event generation with SHERPA 1.1
• A new measurement of the antiproton-to-proton flux ratio up to 100 GeV in the cosmic radiation
• Discrepant hardening observed in cosmic-ray elemental spectra
• Weak Corrections are Relevant for Dark Matter Indirect Detection
• Study of the inclusive production of charged pions, kaons, and protons in pp collisions at sqrt(s) = 0.9, 2.76, and 7 TeV
• Quantitative study of the AMS-02 electron/positron spectra: implications for the pulsar and dark matter properties
• Cosmic Ray Antiprotons at High Energies
• Production of Mesons and Baryons at High Rapidity and High Pt in Proton-Proton Collisions at sqrt(s) = 200 GeV
• What Does The PAMELA Antiproton Spectrum Tell Us About Dark Matter?
• New calculation of antiproton production by cosmic ray protons and nuclei
• Implications of the Cosmic Ray Electron Spectrum and Anisotropy measured with Fermi-LAT
• Dark matter for excess of AMS-02 positrons and antiprotons
• Wino Dark Matter in light of the AMS-02 2015 Data
• Implications for dark matter annihilation from the AMS-02 $\bar{p}/p$ ratio
• AMS-02 Antiprotons from Annihilating or Decaying Dark Matter

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