Dr Seodong Shin (Seoul National University)
Recently, the CoGeNT collaboration reported the WIMP candidate signal events exceeding the expected backgrounds where light and strongly coupled WIMP models are supported. Motivated by this issue, we analyze a light neutralino dark matter scenario with a light CP-even Higgs mediation in the elastic scattering process, which provides the proper mass and direct detection cross section of the CoGeNT result. To be compatible with the result of LEP experiments, we assume the neutralino is lighter than a half of the Higgs mediator. Such scenario is realized in BMSSM context and model parameters are chosen not to consider the rare decay experiments. We also obtain the right relic abundance on viable parameter space, which makes our scenario highly promising.
Prof. Hyung Do Kim (Seoul National University) Mr Kyu Jung Bae (Seoul National University) Dr Seodong Shin (Seoul National University)