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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/65764
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dc.contributor.authorCampos, F. de-
dc.contributor.authorÉboli, O. J. P.-
dc.contributor.authorGarcía-Jareño, M. A.-
dc.contributor.authorValle, J. W. F.-
dc.date.accessioned2014-05-27T11:19:43Z-
dc.date.accessioned2016-10-25T18:15:42Z-
dc.date.available2014-05-27T11:19:43Z-
dc.date.available2016-10-25T18:15:42Z-
dc.date.issued1999-04-26-
dc.identifierhttp://dx.doi.org/10.1016/S0550-3213(99)00032-2-
dc.identifier.citationNuclear Physics B, v. 546, n. 1-2, p. 33-51, 1999.-
dc.identifier.issn0550-3213-
dc.identifier.urihttp://hdl.handle.net/11449/65764-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/65764-
dc.description.abstractWe study chargino pair production at LEP II in supersymmetric models with spontaneously broken R-parity. We perform signal and background analyses, showing that a large region of the parameter space of these models can be probed through chargino searches at LEP II. In particular, we determine the attainable limits on the chargino mass as a function of the magnitude of the effective bilinear R-parity violation parameter ∈, demonstrating that LEP II is able to unravel the existence of charginos with masses almost up to their kinematical limit even in the case of R-parity violation. This requires the study of several final state topologies since the usual MSSM chargino signature is recovered as ∈ → 0. Moreover, for sufficiently large ∈ values, for which the chargino decay mode χ ± → τ ± J dominates, we find through a dedicated Monte Carlo analysis that the χ ± mass bounds are again very close to the kinematic limit. Our results establish the robustness of the chargino mass limit, in the sense that it is basically model-independent. They also show that LEP II can establish the existence of spontaneous R-parity violation in a large region of parameter space should charginos be produced. © 1999 Elsevier Science B.V.en
dc.format.extent33-51-
dc.language.isoeng-
dc.sourceScopus-
dc.titleR-parity-violating signals for chargino production at LEP IIen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade de São Paulo (USP)-
dc.contributor.institutionUniversitat de Valencia-
dc.description.affiliationUniversidade Estadual Paulista Campus de Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha, 3, 12500-000 Guaratinguetá, S.P.-
dc.description.affiliationInstituto de Física Universidade de São Paulo, C.P. 66.318, CEP 05315-970 São Paulo-
dc.description.affiliationInst. Fisica Corpuscular - C.S.I.C. Departament de Fisica Teorica Universitat de Valencia, 46100 Burjassot, València-
dc.description.affiliationInstituto de Fisica Teorica (UNESP), Rua Pamplona 145, São Paulo, SP, 01405-
dc.description.affiliationUnespUniversidade Estadual Paulista Campus de Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha, 3, 12500-000 Guaratinguetá, S.P.-
dc.description.affiliationUnespInstituto de Fisica Teorica (UNESP), Rua Pamplona 145, São Paulo, SP, 01405-
dc.identifier.doi10.1016/S0550-3213(99)00032-2-
dc.identifier.wosWOS:000080276500003-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofNuclear Physics B-
dc.identifier.scopus2-s2.0-0033606022-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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