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dc.contributor.authorAaltonen, T.-
dc.contributor.authorÁlvarez González, B.-
dc.contributor.authorCasal, Bruno-
dc.contributor.authorCuevas, Javier-
dc.contributor.authorGómez, G.-
dc.contributor.authorPalencia, Enrique-
dc.contributor.authorRodrigo, Teresa-
dc.contributor.authorRuiz Jimeno, Alberto-
dc.contributor.authorScodellaro, Luca-
dc.contributor.authorVila, Iván-
dc.contributor.authorVilar, Rocío-
dc.contributor.authorVizán, J.-
dc.date.accessioned2012-02-24T10:03:00Z-
dc.date.available2012-02-24T10:03:00Z-
dc.date.issued2011-07-
dc.identifier.citationPhysical Review Letters 107(5): 051802 (2011)es_ES
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10261/46180-
dc.description8 páginas, 1 figura, 2 tablas.-- PACS numbers: 12.15.Ji, 12.60.-i, 13.85.Qk, 14.70.Hp.-- CDF Collaboration: et al.es_ES
dc.description.abstractUsing Zγ candidate events collected by the CDF detector at the Tevatron Collider, we search for potential anomalous (non-standard-model) couplings between the Z boson and the photon. Zγ couplings vanish at tree level and are heavily suppressed at higher orders; hence any evidence of couplings indicates new physics. Measurements are performed using data corresponding to an integrated luminosity of 4.9  fb-1 in the Z→νν̅ decay channel and 5.1  fb-1 in the Z→l+l- (l=μ, e) decay channels. The combination of these measurements provides the most stringent limits to date on Zγ trilinear gauge couplings. Using an energy scale of Λ=1.5  TeV to allow for a direct comparison with previous measurements, we find limits on the CP-conserving parameters that describe Zγ couplings to be |h3γ,Z|<0.022 and |h4γ,Z|<0.0009. These results are consistent with standard model predictions.es_ES
dc.description.sponsorshipThis work was supported by the U.S. Department of Energy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science and Technology of Japan; the Natural Sciences and Engineering Research Council of Canada; the National Science Council of the Republic of China; the Swiss National Science Foundation; the A. P. Sloan Foundation; the Bundesministerium fu¨ r Bildung und Forschung, Germany; theWorld Class University Program, the National Research Foundation of Korea; the Science and Technology Facilities Council and the Royal Society, U.K.; the Institut National de Physique Nucleaire et Physique des Particules/CNRS; the Russian Foundation for Basic Research; the Ministerio de Ciencia e Innovación, and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D Agency; and the Academy of Finland.es_ES
dc.language.isoenges_ES
dc.publisherAmerican Physical Societyes_ES
dc.rightsopenAccesses_ES
dc.titleLimits on Anomalous Trilinear Gauge Couplings in Zγ Events from pp̅ Collisions at √s=1.96  TeVes_ES
dc.typeartículoes_ES
dc.identifier.doi10.1103/PhysRevLett.107.051802-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1103/PhysRevLett.107.051802es_ES
dc.identifier.e-issn1079-7114-
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