Tuesday, December 11, 2012

1212.2131 (Seungwon Baek et al.)

Higgs Portal Vector Dark Matter : Revisited    [PDF]

Seungwon Baek, P. Ko, Wan-Il Park, Eibun Senaha
We revisit the Higgs portal vector dark matter model including a hidden sector Higgs field that generates the mass of the vector dark matter. The model becomes renormalizable and has two scalar bosons, the mixtures of the SM Higgs and the hidden sector Higgs bosons. The strong bound from direct detection such as XENON100 is evaded due to the cancellation mechanism between the contributions from two scalar bosons. As a result, the model becomes still viable in large range of dark matter mass, contrary to some claims in the literature. The Higgs property is also affected, the signal strengths for the Higgs boson search being universally suppressed relative to the SM value.
View original: http://arxiv.org/abs/1212.2131

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