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

  • ATLAS Collaboration
  • iThemba Labs
  • Department of Physics
  • University of South Africa
  • Cadi Ayyad University
  • Moroccan Foundation for Advanced Science Innovation and Research (MAScIR)
  • Dep Física and CEFITEC of Faculdade de Ciências e Tecnologia
  • NOVA University Lisbon
  • CERN
  • University of Freiburg
  • University of Bonn
  • University of Oklahoma
  • Autonomous University of Barcelona
  • IN2P3/CNRS
  • University of Geneva
  • Azerbaijan National Academy of Sciences
  • University of Amsterdam
  • Oklahoma State University
  • Michigan State University
  • University of Toronto
  • Tel Aviv University
  • Centre d'Etudes de Saclay
  • National Institute for Nuclear Physics
  • University of Milan
  • Abdus Salam International Centre for Theoretical Physics
  • AGH University of Krakow
  • Brookhaven National Laboratory
  • Hampton University
  • Yale University
  • Ludwig Maximilian University of Munich
  • Queen Mary University of London
  • Rutherford Appleton Laboratory
  • Brandeis University
  • Laboratório de Instrumentação e Física Experimental de Partículas
  • University of Granada
  • University of Bern
  • Johannes Gutenberg University Mainz
  • Boston University
  • Stony Brook University
  • University of Texas at Dallas
  • University of Rome Tor Vergata
  • Bogazici University
  • Lund University
  • The University of Tokyo
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • SUNY Albany
  • Royal Holloway University of London
  • University of Victoria BC
  • Laboratoire de Physique Subatomique et de Cosmologie de Grenoble
  • Joint Institute for Nuclear Research
  • Horia Hulubei National Institute of Physics and Nuclear Engineering

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)32-50
Number of pages19
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume721
Issue number1-3
DOIs
StatePublished - Apr 10 2013

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