Neutrino Masses, Leptogenesis and Decaying Dark Matter

Abstract

We study a simple extension of the standard model to simultaneously explain neutrino masses, dark matter and the matter-antimatter asymmetry of the Universe. In our model, the baryon asymmetry is achieved by the leptogenesis mechanism, while the decaying dark matter with the lifetime of O(10^26 s) provides a natural solution to the electron and positron excesses in Fermi and PAMELA satellite experiments. In particular, we emphasize that our model is sensitive to the structure at the endpoint around 1 TeV of the Fermi data. In addition, some of new particles proposed in the model are within the reach at the near future colliders, such as the Large Hadron Collider.

11 pages, 5 figures; revised version

References in corpus (22)

• 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
• Improved Naturalness with a Heavy Higgs: An Alternative Road to LHC Physics
• Cosmic-ray positron fraction measurement from 1 to 30 GeV with AMS-01
• Decaying Dark Matter can explain the electron/positron excesses
• Scalar Multiplet Dark Matter
• PAMELA data and leptonically decaying dark matter
• Minimal Dark Matter predictions for galactic positrons, anti-protons, photons
• Dark matter interpretation of recent electron and positron data
• Neutrino Masses, Lepton Flavor Mixing and Leptogenesis in the Minimal Seesaw Model
• Gamma rays and positrons from a decaying hidden gauge boson
• Positrons and antiprotons from inert doublet model dark matter
• Common Origin of Neutrino Mass, Dark Matter, and Baryogenesis
• Antimatter Signatures of Gravitino Dark Matter Decay
• Cosmic rays from Leptonic Dark Matter
• The PAMELA and ATIC Excesses From a Nearby Clump of Neutralino Dark Matter
• Dark matter and pulsar signals for Fermi LAT, PAMELA, ATIC, HESS and WMAP data
• High-energy Cosmic-Ray Positrons from Hidden-Gauge-Boson Dark Matter
• Anomaly Induced Dark Matter Decay and PAMELA/ATIC Experiments
• ATIC, PAMELA, HESS, Fermi and nearby Dark Matter subhalos
• ATIC/PAMELA anomaly from fermionic decaying Dark Matter
• Absolute electron and positron fluxes from PAMELA/Fermi and Dark Matter

Cited by in corpus (9)

• From the trees to the forest: a review of radiative neutrino mass models
• Right-Handed Neutrinos as the Origin of the Electroweak Scale
• Radio and gamma-ray constraints on dark matter annihilation in the Galactic center
• Detecting Gamma-Ray Anisotropies from Decaying Dark Matter: Prospects for Fermi LAT
• Generalizing the Scotogenic model
• Imprint of Multi-component Dark Matter on AMS-02
• Revisiting Multi-Component Dark Matter with New AMS-02 Data
• Decaying Dark Matter from Dark Instantons
• Deep Correlation Between Cosmic-Ray Anomaly and Neutrino Masses