Visible and Dark Matter Genesis and Cosmic Positron/Electron Excesses

Abstract

Dark and baryonic matter contribute comparable energy density to the present Universe. The dark matter may also be responsible for the cosmic positron/electron excesses. We connect these phenomena with Dirac seesaw for neutrino masses. In our model (i) the dark matter relic density is a dark matter asymmetry generated simultaneously with the baryon asymmetry so that we can naturally understand the coincidence between the dark and baryonic matter; (ii) the dark matter mostly decays into the leptons so that its decay can interpret the anomalous cosmic rays with positron/electron excesses.

5 pages, 2 figures. Minor modification. Accepted by PRD

References in corpus (11)

• Observation of an anomalous positron abundance in the cosmic radiation
• Measurement of the Cosmic Ray e+ plus e- spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope
• Asymmetric Dark Matter
• First Results from the XENON10 Dark Matter Experiment at the Gran Sasso National Laboratory
• A Search for WIMPs with the First Five-Tower Data from CDMS
• Leptogenesis with Dirac Neutrinos
• WIMP dark matter, Higgs exchange and DAMA
• Dark Matter from Baryon Asymmetry
• Neutrino Mass and Baryon Asymmetry from Dirac Seesaw
• Leptogenesis and Dark Matter related ?
• A Simultaneous Solution to Baryogenesis and Dark Matter Problems

Cited by in corpus (25)

• Review of asymmetric dark matter
• Asymmetric Dark Matter from Leptogenesis
• On Relating the Genesis of Cosmic Baryons and Dark Matter
• Baryon Destruction by Asymmetric Dark Matter
• Asymmetric Dark Matter from Hidden Sector Baryogenesis
• Pangenesis in a Baryon-Symmetric Universe: Dark and Visible Matter via the Affleck-Dine Mechanism
• WIMP Dark Matter and Baryogenesis
• Visible and dark matter from a first-order phase transition in a baryon-symmetric universe
• Affleck-Dine dynamics and the dark sector of pangenesis
• From Dirac neutrino masses to baryonic and dark matter asymmetries
• Asymmetric Dark Matter Models in SO(10)
• Resonant Dirac leptogenesis on throats
• A Left-Right Symmetric Model for Neutrino Masses, Baryon Asymmetry and Dark Matter
• Decaying Asymmetric Dark Matter Relaxes the AMS-Fermi Tension
• Dark Matter Antibaryons from a Supersymmetric Hidden Sector
• Snowmass-2013 Cosmic Frontier 3 (CF3) Working Group Summary: Non-WIMP dark matter
• Common Origin of Visible and Dark Universe
• Mirror symmetry: from active and sterile neutrino masses to baryonic and dark matter asymmetries
• An SO(10) \times SO(10)' model for common origin of neutrino masses, ordinary and dark matter-antimatter asymmetries
• Baryon asymmetry and dark matter from soft leptogenesis
• Cosmic matter from dark electroweak phase transition with neutrino mass generation
• Quark Seesaw, Dark $U(1)$ symmetry and Baryon-Dark Matter Coincidence
• Unified origin for visible and dark matter in a baryon-symmetric universe from a first-order phase transition
• Cogenesis of visible and dark matter in type-I Dirac seesaw
• Cosmic Collider Gravitational Waves sourced by Right-handed Neutrino production from Bubbles: Testing Seesaw, Leptogenesis and Dark Matter