Low Scale Leptogenesis and Dark Matter Candidates in an Extended Seesaw Model

Cheon, H. Sung; Kang, Sin Kyu; Kim, C. S.

Low Scale Leptogenesis and Dark Matter Candidates in an Extended Seesaw Model

Authors

Cheon, H. Sung

Kang, Sin Kyu

Kim, C. S.

Description

We consider a variant of seesaw mechanism by introducing extra singlet neutrinos and singlet scalar boson, and show how low scale leptogenesis is successfully realized in this scenario. We examine if the newly introduced neutral particles, either singlet Majorana neutrino or singlet scalar boson, can be a candidate for dark matter. We also discuss the implications of the dark matter detection through the scattering off the nucleus of the detecting material on our scenarios for dark matter. In addition, we study the implications for the search of invisible Higgs decay at LHC, which may serve as a probe of our scenario for dark matter.
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