Mateusz Duch (University of Warsaw, Poland)
We explored an extension of the Standard Model by an additional U(1) gauge group and a complex scalar interacting through the Higgs portal. As the scalar is charged under this gauge factor, this simple model supplies a vector dark matter candidate satisfying the observed relic abundance and limits from direct dark matter searches at LUX and XENON. An additional Higgs-like state, that may be heavier or lighter than the observed Higgs, is present and fulfills LEP and LHC bounds. We performed a detailed analysis of the running of the couplings and found a region in the parameter space that allows for the absolute stability of the electroweak vacuum.