Cosmic e^\pm, \bar p, γand neutrino rays in leptocentric dark matter models

Abstract

Dark matter annihilation is one of the leading explanations for the recently observed $e^{\pm }$ excesses in cosmic rays by PAMELA, ATIC, FERMI-LAT and HESS. Any dark matter annihilation model proposed to explain these data must also explain the fact that PAMELA data show excesses only in $e^{\pm }$ spectrum but not in anti-proton. It is interesting to ask whether the annihilation mode into anti-proton is completely disallowed or only suppressed at low energies. Most models proposed have negligible anti-protons in all energy ranges. We show that the leptocentric $U(1{)}_{B-3L_i}$ dark matter model can explain the $e^{\pm }$ excesses with suppressed anti-proton mode at low energies, but at higher energies there are sizable anti-proton excesses. Near future data from PAMELA and AMS can provide crucial test for this type of models. Cosmic $\gamma$ ray data can further rule out some of the models. We also show that this model has interesting cosmic neutrino signatures.

Latex 20 pages and five figures. References added

References in corpus (33)

• PYTHIA 6.4 Physics and Manual
• Observation of an anomalous positron abundance in the cosmic radiation
• A Theory of Dark Matter
• Measurement of the Cosmic Ray e+ plus e- spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope
• A new measurement of the antiproton-to-proton flux ratio up to 100 GeV in the cosmic radiation
• Probing the ATIC peak in the cosmic-ray electron spectrum with H.E.S.S
• CMB Constraints on WIMP Annihilation: Energy Absorption During the Recombination Epoch
• Calculation of atmospheric neutrino flux using the interaction model calibrated with atmospheric muon data
• CMB constraints on Dark Matter models with large annihilation cross-section
• Cosmic-ray positron fraction measurement from 1 to 30 GeV with AMS-01
• Gamma-ray and radio tests of the e+e- excess from DM annihilations
• PAMELA data and leptonically decaying dark matter
• Galactic secondary positron flux at the Earth
• PAMELA Positron Excess as a Signal from the Hidden Sector
• Constraints on Dark Matter annihilations from reionization and heating of the intergalactic gas
• Enhancement of Dark Matter Annihilation via Breit-Wigner Resonance
• Gamma rays and positrons from a decaying hidden gauge boson
• Dark Matter: The Leptonic Connection
• Flavor Ratios of Astrophysical Neutrinos: Implications for Precision Measurements
• Constraints on leptonically annihilating Dark Matter from reionization and extragalactic gamma background
• Discriminating different scenarios to account for the cosmic $e^{\pm }$ excess by synchrotron and inverse Compton radiation
• Dark matter and sub-GeV hidden U(1) in GMSB models
• Extragalactic Inverse Compton Light from Dark Matter Annihilation and the Pamela Positron Excess
• The Leptonic Higgs as a Messenger of Dark Matter
• Mirage in the Sky: Non-thermal Dark Matter, Gravitino Problem, and Cosmic Ray Anomalies
• Prospects for Detecting Neutrino Signals from Annihilating/Decaying Dark Matter to Account for the PAMELA and ATIC results
• Determination of the Neutrino Flavor Ratio at the Astrophysical Source
• Non-Thermal Production of WIMPs, Cosmic $e^{\pm }$ Excesses and $\gamma$-rays from the Galactic Center
• A Brief Review on Dark Matter Annihilation Explanation for $e^{\pm }$ Excesses in Cosmic Ray
• ATIC and PAMELA Results on Cosmic e^\pm Excesses and Neutrino Masses
• A Markov Chain Monte Carlo Study on Dark Matter Property Related to the Cosmic e${}^{\pm }$ Excesses
• ATIC/PAMELA anomaly from fermionic decaying Dark Matter
• Dark Matter with Time-Varying Leptophilic Couplings

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• Pure Leptonic Gauge Symmetry, Neutrino Masses and Dark Matter
• Generalized Gauge U(1) Family Symmetry for Quarks and Leptons
• Higgsino dark matter model consistent with galactic cosmic ray data and possibility of discovery at LHC-7
• Hierarchical Quark and Lepton Masses with Sequential U(1) Gauge Symmetry