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Exploring a dark sector through the Higgs portal at a lepton collider
Physics Letters B
We investigate the prospects for detecting a hidden sector at an e^+ e^- collider. The hidden sector is assumed to be composed of invisible particles that carry no charges under the Standard Model gauge interactions, and whose primary interactions with ordinary matter are through the Higgs portal. We consider both the cases when the decays of an on-shell Higgs into a pair of hidden sector particles are kinematically allowed, and the case when such decays are kinematically forbidden. We finddoi:10.1016/j.physletb.2014.03.010 fatcat:im6upqu4jfg6xjrqkesz6evhtq