Search for displaced muonic lepton jets from light Higgs boson decay in proton-proton collisions at root s=7 TeV with the ATLAS detector

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Barton, Adam ; Borissov, Guennadi ; Bouhova-Thacker, Eva ; Chilingarov, Alexandre ; Davidson, Ruth ; de Mora, Lee ; Dearnaley, William ; Fox, Harald ; Henderson, Robert ; Hughes, Gareth ; Jones, Roger William Lewis ; Kartvelishvili, Vakhtang ; Long, Robin ; Love, Peter ; Maddocks, Harvey ; Smizanska, Maria ; Walder, James (2013)
  • Subject:
    arxiv: High Energy Physics::Phenomenology | High Energy Physics::Experiment

A search is performed for collimated muon pairs displaced from the primary vertex produced in the decay of long-lived neutral particles in proton–proton collisions at root s=7 TeV centre-of-mass energy, with the ATLAS detector at the LHC. In a 1.9 fb−1event sample collected during 2011, the observed data are consistent with the Standard Model background expectations. Limits on the product of the production cross section and the branching ratio of a Higgs boson decaying to hidden-sector neutral long-lived particles are derived as a function of the particlesʼ mean lifetime.
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