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Search for the Dark Photon and the Dark Higgs Boson at Belle
Physical Review Letters
The dark photon, A^', and the dark Higgs boson, h^', are hypothetical constituents featured in a number of recently proposed Dark Sector Models. Assuming prompt decays of both dark particles, we search for their production in the so-called Higgs-strahlung channel, e^+e^- → A^' h', with h^'→ A^' A^'. We investigate ten exclusive final-states with A^'→ e^+e^-, μ^+μ^-, or π^+π^-, in the mass ranges 0.1 GeV/c^2 < m_A^' < 3.5 GeV/c^2 and 0.2 GeV/c^2 < m_h' < 10.5 GeV/c^2. We also investigate threedoi:10.1103/physrevlett.114.211801 pmid:26066427 fatcat:kceioo46zrc3vkwur4af34aeyu