dc.contributor.advisor Lubatti, Henry J dc.contributor.author Blackburn, Daniel Ryan dc.date.accessioned 2016-03-11T22:44:23Z dc.date.available 2016-03-11T22:44:23Z dc.date.submitted 2015-12 dc.identifier.other Blackburn_washington_0250E_15360.pdf dc.identifier.uri http://hdl.handle.net/1773/35298 dc.description Thesis (Ph.D.)--University of Washington, 2015-12 dc.description.abstract A search is presented for the decay of the Standard Model Higgs boson or another scalar boson to a pair of weakly-interacting, long-lived particles in 20.3 fb$^{-1}$ of proton-proton collisions at $\sqrt{s} = 8$ TeV recorded in 2012 by the ATLAS detector. The strategy requires that one of the long-lived particles decay inside the muon spectrometer. The second long-lived particle is required to decay in the inner detector or the muon spectrometer. No excess of events is observed above the expected background. Limits are derived on the scalar boson's production cross section times branching ratio as a function of the long-lived particle's proper decay length. dc.format.mimetype application/pdf dc.language.iso en_US dc.subject.other Physics dc.subject.other Particle physics dc.subject.other physics dc.title Search for Weakly-interacting, Long-lived particles that Decay to Displaced Hadronic Jets in Proton-Proton Collisions at $\sqrt{s}=8$ TeV with the ATLAS Detector. dc.type Thesis dc.embargo.terms Open Access
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