Seminars & Lectures
| * TITLE | Fermi Gamma Ray Line at 130 GeV from Axion-Mediated Dark Matter | ||||||
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| * HOST(Applicant) | |||||||
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| * DATE / TIME | 2012-07-30, 4:00 pm | ||||||
| * PLACE | 503 Conference room, APCTP | ||||||
| * ABSTRACT | |||||||
| We consider a singlet fermion dark matter with PQ symmetry. A singlet complex scalar is introduced to mediate between dark matter and the SM through Higgs portal interaction and electroweak PQ anomalies. We show that dark matter annihilation with axion mediation can explain a monochromatic photon line of the Fermi LAT data at 130 GeV by anomaly interactions while the annihilation cross section with Higgs portal interaction is p-wave suppressed. We discuss the interplay between the direct detection of the fermion dark matter and the collider search of Higgs-like scalars. We also present a ultra-violet completion of the dark matter model into the NMSSM with PQ symmetry. |
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