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

Tanasijczuk, Andres Jorge;ATLAS;et.al.
(2013) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 721, p. 32 (2013)

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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−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 particlesʼ mean lifetime.
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Tanasijczuk, A. J., ATLAS, & et al. (2013). Search for displaced muonic lepton jets from light Higgs boson decay in proton-proton collisions at $\sqrt{s}=7$ TeV with the ATLAS detector. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 721, 32. https://doi.org/10.1016/j.physletb.2013.02.058 (Original work published 2013)