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

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

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ATLAS Collaboration; Cabrera Urbán, Susana; Castillo Giménez, María Victoria; Costa Mezquita, María José; Fassi, Farida; Ferrer Soria, Antonio; Fiorini, Luca; Fuster Verdú, Juan A.; García García, Carmen; García Navarro, José Enrique; González de la Hoz, Santiago; Hernández Jiménez, Yesenia; Higón Rodríguez, Emilio; Irles Quiles, Adrián; Kaci, Mohammed; Lacasta Llácer, Carlos; Lacuesta Miquel, Vicente; Martí García, Salvador; Miñano Moya, Mercedes; Mitsou, Vasiliki; Moles Valls, Regina; Moreno Llácer, María; Oliver García, Elena; Pedraza López, Sebastián; Pérez García-Estañ, María Teresa; Romero Adam, E.; Ros Martínez, Eduardo; Salt Cairols, José; Sánchez Martínez, Victoria; Solans Sánchez, Carlos Antonio; Soldevila, U.; Sánchez Martínez, Javier; Torró Pastor, Emma; Valero Biot, Alberto; Valladolid Gallego, E.; Valls Ferrer, Juan Antonio; Villaplana Pérez, Miguel; Vos, Marcel
Aquest document és un/a article, creat/da en: 2013

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.
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