Dark Matter through the Axion Portal

@article{Nomura2009DarkMT,
  title={Dark Matter through the Axion Portal},
  author={Yasunori Nomura and Jesse Thaler},
  journal={Physical Review D},
  year={2009},
  volume={79},
  pages={075008}
}
Motivated by the galactic positron excess seen by PAMELA and ATIC/PPB-BETS, we propose that dark matter is a TeV-scale particle that annihilates into a pseudoscalar 'axion'. The positron excess and the absence of an antiproton or gamma ray excess constrain the axion mass and branching ratios. In the simplest realization, the axion is associated with a Peccei-Quinn symmetry, in which case it has a mass around 360-800 MeV and decays into muons. We present a simple and predictive supersymmetric… 

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References

SHOWING 1-8 OF 8 REFERENCES

Scalar s: Couples to strange quark through mixing with down-type Higgs. Mediates spin-independent DM-nucleon force

    Axion a: Only contributes spin-dependent DM-nucleon force, but not at zero velocity. What are the bounds? How does one properly calculate this? (violates micrOMEGAs assumptions) Under Investigation

    • CDMS/XENON bounds very sensitive to m DM , m s , and mixing angle

    DM may be a Majorana fermion ψ obtaining a mass from L = −ξSψ 2 /2+h.c., in which case the stability is ensured by a Z2 symmetry

      Nature 454

      • 735
      • 2008

      Muon-type neutrinos hit rock, create upward-going muon flux

        arXiv:0807.1427 [hep-ex]

        • [CLEO Collaboration], Phys. Rev. Lett. 101,
        • 2008

        HESS Collaboration], Astropart

        • Phys. 29,
        • 2008

        For TeV neutrinos, standard assumptions about neutrino-nucleon scattering cross section and muon energy loss start to break down