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Search for displaced vertices arising from decays of new heavy particles in 7 TeV pp collisions at ATLAS

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Search for displaced vertices arising from decays of new heavy particles in 7 TeV pp collisions at ATLAS

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ATLAS Collaboration; Mitsou, Vasiliki; Fiorini, Luca; Ros Martínez, Eduardo; Castillo Giménez, María Victoria; Fuster Verdú, Juan A.; García García, Carmen; Martí García, Salvador; Salt Cairols, José; Lacasta Llácer, Carlos; Valls Ferrer, Juan Antonio; Higón Rodríguez, Emilio; Ferrer Soria, Antonio; González de la Hoz, Santiago; Kaci, Mohammed; Hernández Jiménez, Yesenia; Villaplana Pérez, Miguel

Aquest document és un/a article, creat/da en: 2012

Este documento está disponible también en : 10.1016/j.physletb.2011.12.057

We present the results of a search for new, heavy particles that decay at a significant distance from their production point into a final state containing charged hadrons in association with a high-momentum muon. The search is conducted in a pp-collision data sample with a center-of-mass energy of 7 TeV and an integrated luminosity of 33 pb(-1) collected in 2010 by the ATLAS detector operating at the Large Hadron Collider. Production of such particles is expected in various scenarios of physics beyond the standard model. We observe no signal and place limits on the production cross-section of supersymmetric particles in an R-parity-violating scenario as a function of the neutralino lifetime. Limits are presented for different squark and neutralino masses, enabling extension of the limits to a variety of other models.

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