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Inclusive search for same-sign dilepton signatures in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

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Inclusive search for same-sign dilepton signatures in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

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dc.contributor.author	ATLAS Collaboration
dc.contributor.author	Mitsou, Vasiliki
dc.contributor.author	Ferrer Soria, Antonio
dc.contributor.author	Valls Ferrer, Juan Antonio
dc.contributor.author	Castillo Giménez, María Victoria
dc.contributor.author	Cabrera Urbán, Susana
dc.contributor.author	Fuster Verdú, Juan A.
dc.contributor.author	Fiorini, Luca
dc.contributor.author	Ros Martínez, Eduardo
dc.contributor.author	Hernández Jiménez, Yesenia
dc.contributor.author	Lacasta Llácer, Carlos
dc.contributor.author	Higón Rodríguez, Emilio
dc.contributor.author	Salt Cairols, José
dc.contributor.author	González de la Hoz, Santiago
dc.contributor.author	García García, Carmen
dc.contributor.author	Kaci, Mohammed
dc.contributor.author	Martí García, Salvador
dc.contributor.author	Lacuesta Miquel, Vicente
dc.contributor.author	Villaplana Pérez, Miguel
dc.date.accessioned	2014-05-27T11:27:25Z
dc.date.available	2014-05-27T11:27:25Z
dc.date.issued	2011
dc.identifier.citation	ATLAS Collaboration Mitsou, Vasiliki Ferrer Soria, Antonio Valls Ferrer, Juan Antonio Castillo Giménez, María Victoria Cabrera Urbán, Susana Fuster Verdú, Juan A. Fiorini, Luca Ros Martínez, Eduardo Hernández Jiménez, Yesenia Lacasta Llácer, Carlos Higón Rodríguez, Emilio Salt Cairols, José González de la Hoz, Santiago García García, Carmen Kaci, Mohammed Martí García, Salvador Lacuesta Miquel, Vicente Villaplana Pérez, Miguel 2011 Inclusive search for same-sign dilepton signatures in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector Journal of High Energy Physics 10 107 1 48
dc.identifier.uri	http://hdl.handle.net/10550/35478
dc.description.abstract	An inclusive search is presented for new physics in events with two isolated leptons (e or mu) having the same electric charge. The data are selected from events collected from pp collisions at root s = 7 TeV by the ATLAS detector and correspond to an integrated luminosity of 34 pb^-1. The spectra in dilepton invariant mass, missing transverse momentum and jet multiplicity are presented and compared to Standard Model predictions. In this event sample, no evidence is found for contributions beyond those of the Standard Model. Limits are set on the cross-section in a ducial region for new sources of same-sign high-mass dilepton events in the ee, emu and mumu channels. Four models predicting same-sign dilepton signals are constrained: two descriptions of Majorana neutrinos, a cascade topology similar to supersymmetry or universal extra dimensions, and fourth generation d-type quarks. Assuming a new physics scale of 1 TeV, Majorana neutrinos produced by an effective operator V with masses below 460 GeV are excluded at 95% confidence level. A lower limit of 290 GeV is set at 95% confidence level on the mass of fourth generation d-type quarks.
dc.relation.ispartof	Journal of High Energy Physics, 2011, vol. 10, num. 107, p. 1-48
dc.subject	Física nuclear
dc.title	Inclusive search for same-sign dilepton signatures in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
dc.type	journal article	es_ES
dc.date.updated	2014-05-27T11:27:25Z
dc.identifier.doi	10.1007/JHEP10(2011)107
dc.identifier.idgrec	069184
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1007/JHEP10(2011)107