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

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Aad, G ; Abajyan, T ; Abbott, B ; Abdallah, J ; Abdel Khalek, S ; Abdelalim, AA ; Abdinov, O ; Aben, R ; Abi, B ; Abolins, M ; AbouZeid, OS ; Abramowicz, H ; Abreu, H ; Acerbi, E ; Acharya, BS ; Adamczyk, L ; Adams, DL ; Addy, TN ; Adelman, J ; Adomeit, S ; Adragna, P ; Adye, T ; Aefsky, S ; Aguilar-Saavedra, JA ; Agustoni, M ; Aharrouche, M ; Ahlen, SP ; Ahles, F ; Ahmad, A ; Ahsan, M ... view all 91 authors (2013)
  • Publisher: eScholarship, University of California
  • Subject:
    arxiv: Physics::Instrumentation and Detectors | Physics::Accelerator Physics | High Energy Physics::Experiment

© 2013 CERN 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 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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