Cosmic-ray Electron and Positron Excesses from Hidden Gaugino Dark Matter

Abstract

We study a scenario that a hidden gaugino dark matter decays into the standard-model particles (and their supersymmetric partners) through a kinetic mixing with the gaugino of a U(1)B-L broken at a scale close to the grand unification scale. We show that decay of the hidden gaugino can explain excesses in the cosmic-ray electrons and positrons observed by PAMELA and Fermi.

12 pages, 2 figures

References in corpus (12)

• Observation of an anomalous positron abundance in the cosmic radiation
• A new measurement of the antiproton-to-proton flux ratio up to 100 GeV in the cosmic radiation
• Big-Bang Nucleosynthesis and Gravitino
• The origin of the positron excess in cosmic rays
• Inflaton Decay in Supergravity
• Inhomogeneity in the Supernova Remnant Distribution as the Origin of the PAMELA Anomaly
• High-energy electron observations by PPB-BETS flight in Antarctica
• Hidden gauginos of an unbroken U(1): Cosmological constraints and phenomenological prospects
• High-energy Cosmic-Ray Positrons from Hidden-Gauge-Boson Dark Matter
• Cosmic ray electrons and positrons from supernova explosions of massive stars
• R-violating Decay of Wino Dark Matter and electron/positron Excesses in the PAMELA/Fermi Experiments
• Decaying Hidden Gaugino as a Source of PAMELA/ATIC Anomalies

Cited by in corpus (5)

• Radio and gamma-ray constraints on dark matter annihilation in the Galactic center
• Constraining the co-genesis of Visible and Dark Matter with AMS-02 and Xenon-100
• Absolute electron and positron fluxes from PAMELA/Fermi and Dark Matter
• Extracting the size of the cosmic electron-positron anomaly
• On the use of X-ray and gamma-ray telescopes for identifying the origin of electrons and positrons observed by ATIC, Fermi, and PAMELA