Supersymmetric B-L dark matter model and the observed anomalies in the cosmic rays Academic Article uri icon


  • We propose a simple model of supersymmetric dark matter that can explain recent results from PAMELA and ATIC experiments. It is based on a U(1)B-L extension of the minimal supersymmetric standard model. The dark matter particle is a linear combination of the U(1)B-L gaugino and Higgsino partners of Higgs fields that break the B-L around 1 TeV. The dominant mode of dark matter annihilation is to the lightest of the new Higgs fields, which has a mass in the GeV range, and its subsequent decay mainly produces taus or muons by the virtue of B-L charges. This light Higgs also results in Sommerfeld enhancement of the dark matter annihilation cross section, which can be 103. For a dark matter mass in the 1-2 TeV range, the model provides a good fit to the PAMELA data and a reasonable fit to the ATIC data. We also briefly discuss the prospects of this model for direct detection experiments and the LHC. 2009 The American Physical Society.

published proceedings


author list (cited authors)

  • Allahverdi, R., Dutta, B., Richardson-McDaniel, K., & Santoso, Y.

citation count

  • 40

complete list of authors

  • Allahverdi, Rouzbeh||Dutta, Bhaskar||Richardson-McDaniel, Katherine||Santoso, Yudi

publication date

  • April 2009