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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KünyeAad, G., Abajyan, T., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdelalim, A.A. ... ATLAS Collaboration. (2013). Search for displaced muonic lepton jets from light higgs boson decay in proton-proton collisions at root s=7 TeV with the ATLAS detector. Physics Letters B, 721 (1-3), pp. 32-50. http://dx.doi.org/10.1016/j.physletb.2013.02.058.
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(-1) event 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 particles' mean lifetime.