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A Tight Connection Between Direct and Indirect Detection of Dark Matter through Higgs Portal Couplings to a Hidden Sector

par Arina, Chiara ;Josse-Michaux, François-Xavier ;Sahu, Narendra
Référence Physical Review D - Particles, Fields, Gravitation and Cosmology, 82, page (015005)
Publication Publié, 2010-04-22

Article révisé par les pairs

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Résumé :

We present a hidden Abelian extension of the standard model including a complex scalar as a dark matter candidate and a light scalar acting as a long range force carrier between dark matter particles. The Sommerfeld enhanced annihilation cross section of the dark matter explains the observed cosmic ray excesses. The light scalar field also gives rise to potentially large cross sections of dark matter on the nucleon, therefore providing an interesting way to probe this model simultaneously at direct and indirect dark matter search experiments. We constrain the parameter space of the model by taking into account the CDMS-II exclusion limit as well as PAMELA and Fermi LAT data. © 2010 The American Physical Society.