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

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Show simple item record Aad, G. Terron, J. Rodier, Stephane Nebot, Eduardo March, Luis Llorente Merino, J.
dc.contributor.other UAM. Departamento de Física Teórica es_ES 2014-10-16T12:37:31Z 2014-10-16T12:37:31Z 2011-10-21
dc.identifier.citation Journal of High Energy Physics 2011.10 (2011): 1-47 en_US
dc.identifier.issn 1029-8479 (online) es_ES
dc.identifier.issn 1126-6708 (print) es_ES
dc.description Journal of High Energy Physics 2011.10 (2011): 1-47 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA) en_US
dc.description.abstract An inclusive search is presented for new physics in events with two isolated leptons (e or μ) having the same electric charge. The data are selected from events collected from pp collisions at √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 fiducial region for new sources of same-sign high-mass dilepton events in the ee, eμ and μμ 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. en_US
dc.format.extent 48 pag. es_ES
dc.format.mimetype application/pdf en
dc.language.iso eng en
dc.publisher Springer Verlag en_US
dc.publisher SISSA 2011 en_US
dc.relation.ispartof Journal of High Energy Physics en_US
dc.rights Copyright CERN. en_US
dc.subject.other Hadron-Hadron Scattering es_ES
dc.title Inclusive search for same-sign dilepton signatures in pp collisions at √s = 7 TeV with the ATLAS detector es_ES
dc.type article es_ES
dc.subject.eciencia Física es_ES
dc.relation.publisherversion es_ES
dc.identifier.doi 10.1007/JHEP10(2011)107 es_ES
dc.identifier.publicationfirstpage 1 es_ES
dc.identifier.publicationissue 10 es_ES
dc.identifier.publicationlastpage undefined es_ES
dc.identifier.publicationvolume 2011 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion en
dc.rights.accessRights openAccess es_ES
dc.authorUAM March Ruiz, Luis (264217)
dc.authorUAM Nebot Del Busto, Eduardo (264001)
dc.authorUAM Rodier , Stephane (260644)

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