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arXiv · 0909.2130

Dark matter signals and cosmic ray anomalies in an extended seesaw model

H. S. Cheon·Sin Kyu Kang·C. S. Kim
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Abstract

An extended seesaw model proposed to achieve low scale leptogenesis can resolve the excess positron and electron fluxes observed from PAMELA, ATIC and/or Fermi-LAT, and simultaneously accommodate some of recent experimental results for dark matter (DM) signals. In this approach, in addition to SU(2)_L doublet and the (light) singlet Higgs fields, an extra vector-like singlet neutrino and a singlet scalar field, which are coexisting two-particle dark matter candidates, are responsible for the origin of the excess positron and electron fluxes to resolve the PAMELA, ATIC and/or Fermi-LAT anomalies, as well as for the DM signals observed from direct searches in low mass scale.

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H. S. Cheon, Sin Kyu Kang, C. S. Kim. 2010-12-20. Dark matter signals and cosmic ray anomalies in an extended seesaw model. https://doi.org/10.1016/j.physletb.2010.11.028

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