Constraints on WIMP Dark Matter from the High Energy PAMELA $\bar{p}/p$ data

Abstract

A new calculation of the $\bar{p}/p$ ratio in cosmic rays is compared to the recent PAMELA data. The good match up to 100 GeV allows to set constraints on exotic contributions from thermal WIMP dark matter candidates. We derive stringent limits on possible enhancements of the WIMP \pbar flux: a $m_{\mathrm{WIMP}}$=100 GeV (1 TeV) signal cannot be increased by more than a factor 6 (40) without overrunning PAMELA data. Annihilation through the $W^{+}{W}^{-}$ channel is also inspected and cross-checked with $e^{+}/(e^{-}+e^{+})$ data. This scenario is strongly disfavored as it fails to simultaneously reproduce positron and antiproton measurements.

5 pages, 5 figures, the bibliography has been updated, minor modifications have been made in the text

References in corpus (6)

• A new measurement of the antiproton-to-proton flux ratio up to 100 GeV in the cosmic radiation
• Cosmic-ray positron fraction measurement from 1 to 30 GeV with AMS-01
• Measurements of 0.2 to 20 GeV/n cosmic-ray proton and helium spectra from 1997 through 2002 with the BESS spectrometer
• The galactic antiproton spectrum at high energies: background expectation vs. exotic contributions
• Antideuteron fluxes from dark matter annihilation in diffusion models
• Antiproton and Positron Signal Enhancement in Dark Matter Mini-Spikes Scenarios

Cited by in corpus (60)

• Observation of an anomalous positron abundance in the cosmic radiation
• New results from DAMA/LIBRA
• Background model systematics for the Fermi GeV excess
• A Tale of Tails: Dark Matter Interpretations of the Fermi GeV Excess in Light of Background Model Systematics
• On possible interpretations of the high energy electron-positron spectrum measured by the Fermi Large Area Telescope
• Gamma-ray and radio tests of the e+e- excess from DM annihilations
• Multi-Component Dark Matter
• Galactic electrons and positrons at the Earth:new estimate of the primary and secondary fluxes
• High-energy antiprotons from old supernova remnants
• Inverse Compton constraints on the Dark Matter e+e- excesses
• Constraints on Dark Matter annihilations from reionization and heating of the intergalactic gas
• Scrutinizing the evidence for dark matter in cosmic-ray antiprotons
• Positrons and antiprotons from inert doublet model dark matter
• The PAMELA and ATIC Excesses From a Nearby Clump of Neutralino Dark Matter
• A new look at the cosmic ray positron fraction
• 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
• Dark matter and sub-GeV hidden U(1) in GMSB models
• The Leptonic Higgs as a Messenger of Dark Matter
• Extracting limits on Dark Matter annihilation from gamma-ray observations towards dwarf spheroidal galaxies
• PAMELA, DAMA, INTEGRAL and Signatures of Metastable Excited WIMPs
• Mirage in the Sky: Non-thermal Dark Matter, Gravitino Problem, and Cosmic Ray Anomalies
• Interpretation of the cosmic ray positron and antiproton fluxes
• Cosmic ray lepton puzzle in the light of cosmological N-body simulations
• TASI 2008 Lectures on Dark Matter
• A fussy revisitation of antiprotons as a tool for Dark Matter searches
• Dark Matter Indirect Signatures
• p, He, and C to Fe cosmic-ray primary fluxes in diffusion models: Source and transport signatures on fluxes and ratios
• Extended MSSM Neutralinos as the Source of the PAMELA Positron Excess
• Direct constraints on diffusion models from cosmic-ray positron data: Excluding the Minimal model for dark matter searches
• General Analysis of Antideuteron Searches for Dark Matter
• Closing in on mass-degenerate dark matter scenarios with antiprotons and direct detection
• Galactic Signatures of Decaying Dark Matter
• Discriminating the source of high-energy positrons with AMS-02
• R-parity preserving super-WIMP decays
• ATIC and PAMELA Results on Cosmic e^\pm Excesses and Neutrino Masses
• Minimal Dark Matter and Leptogenesis
• Testing the Dark Matter Interpretation of the PAMELA Excess through Measurements of the Galactic Diffuse Emission
• "Discrepant hardenings" in cosmic ray spectra: a first estimate of the effects on secondary antiproton and diffuse gamma-ray yields
• Systematic study of the uncertainties in fitting the cosmic positron data by AMS-02
• AMS-02 Positron Excess and Indirect Detection of Three-body Decaying Dark Matter
• Astrophysical Uncertainties in the Cosmic Ray Electron and Positron Spectrum From Annihilating Dark Matter
• Diffuse gamma-ray background and cosmic-ray positrons from annihilating dark matter
• Cosmic Ray Positrons from Annihilations into a New, Heavy Lepton
• Constraining dark matter annihilation with cosmic ray antiprotons using neural networks
• A novel prediction for secondary positrons and electrons in the Galaxy
• Cosmic-ray antiprotons in the AMS-02 era: A sensitive probe of dark matter
• Chemical Composition of Galactic Cosmic Rays with Space Experiments
• Antiprotons from Dark Matter: Effects of a Position-Dependent Diffusion Coefficient
• Dark Matter Prospects in Deflected Mirage Mediation
• What could we learn from a sharply falling positron fraction?
• Gamma-rays From Warm WIMP Dark Matter Annihilation
• Interpreting the galactic center gamma-ray excess in the NMSSM
• Thermal relics in cosmology with bulk viscosity
• Cosmic ray backgrounds for dark matter indirect detection
• Dark Matter Annihilation in the Universe
• SZ effects from annihilating dark matter in the Milky Way: smooth halo, subhalos and intermediate-mass-black-holes
• Antiproton Flux in Cosmic Ray Propagation Models with Anisotropic Diffusion
• Cosmic ray constraints on singlino-like dark matter candidates