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Search for dark photons from supersymmetric hidden valleys

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Article number081802
<mark>Journal publication date</mark>17/08/2009
<mark>Journal</mark>Physical review letters
Issue number8
Number of pages7
Publication StatusPublished
<mark>Original language</mark>English


We search for a new light gauge boson, a dark photon, with the D0 experiment. In the model we consider, supersymmetric partners are pair produced and cascade to lightest neutralinos that can decay into the hidden sector state plus either a photon or a dark photon. The dark photon decays through its mixing with a photon into fermion pairs. We therefore investigate a previously unexplored final state that contains a photon, two spatially close leptons, and large missing transverse energy. We do not observe any evidence for dark photons and set a limit on their production.

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© 2009 The American Physical Society