Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-04-22
Phys. Rev. D 82, 015005 (2010)
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, 7 figures. Added discussions on tuning and inverse Compton scattering constraints. References added and updated. Mat
Scientific paper
10.1103/PhysRevD.82.015005
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 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 CDMS-II exclusion limit as well as PAMELA and FermiLAT data.
Arina Chiara
Josse-Michaux François-Xavier
Sahu Narendra
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