Leptonic Indirect Detection Signals from Strongly Interacting Asymmetric Dark Matter
arXiv:0909.5499
Abstract
Particles with TeV mass and strong self-interactions generically have the right annihilation cross section to explain an observed excess of cosmic electrons and positrons if the end-product of the annihilation is charged leptons. We present an explicit model of strongly-coupled TeV-scale dark matter whose relic abundance related to the matter-antimatter asymmetry of the observed universe. The B - L asymmetry of the standard model is transfered to the dark sector by an operator carrying standard model lepton number. Lepton number violation naturally induces dark matter particle-antiparticle oscillations at late times, allowing dark matter-antimatter annihilations today. The dark matter annihilates into lighter strongly-interacting particles in the dark sector that decay to leptons via the transfer operator. The strong dynamics in the dark sector is at the weak scale due to supersymmetry breaking. The correct dark matter abundance is automatically obtained for natural values of dimensionless parameters, analogous to the situation for conventional WIMPs.
4 pages, revtex, 1 figure; v2: corrected discussion of relic density, bounds on dark matter Majorana mass
Cited by in corpus (18)
- Asymmetric Dark Matter from Leptogenesis
- Asymmetric WIMP dark matter
- On Relating the Genesis of Cosmic Baryons and Dark Matter
- Implications of CoGeNT and DAMA for Light WIMP Dark Matter
- Aidnogenesis via Leptogenesis and Dark Sphalerons
- Origins of Hidden Sector Dark Matter I: Cosmology
- Asymmetric Dark Matter and Dark Radiation
- Oscillating Asymmetric Dark Matter
- Visible and dark matter from a first-order phase transition in a baryon-symmetric universe
- Phenomenology of WIMPy baryogenesis models
- Cosmic Coincidence and Asymmetric Dark Matter in a Stueckelberg Extension
- A Unified Theory of Matter Genesis: Asymmetric Freeze-In
- Discovering Asymmetric Dark Matter with Anti-Neutrinos
- Primordial Black Hole Dark Matter evaporating on the Neutrino Floor
- Superconformal Technicolor: Models and Phenomenology
- A dark force for baryons
- Snowmass-2013 Cosmic Frontier 3 (CF3) Working Group Summary: Non-WIMP dark matter
- Generation of WIMP Miracle-like Densities of Baryons and Dark Matter