dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.contributor | Universidade de São Paulo (USP) | |
dc.contributor | Universitat de Valencia | |
dc.date.accessioned | 2014-05-27T11:19:43Z | |
dc.date.accessioned | 2022-10-05T17:38:51Z | |
dc.date.available | 2014-05-27T11:19:43Z | |
dc.date.available | 2022-10-05T17:38:51Z | |
dc.date.created | 2014-05-27T11:19:43Z | |
dc.date.issued | 1999-04-26 | |
dc.identifier | Nuclear Physics B, v. 546, n. 1-2, p. 33-51, 1999. | |
dc.identifier | 0550-3213 | |
dc.identifier | http://hdl.handle.net/11449/65764 | |
dc.identifier | 10.1016/S0550-3213(99)00032-2 | |
dc.identifier | WOS:000080276500003 | |
dc.identifier | 2-s2.0-0033606022 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/3915648 | |
dc.description.abstract | We 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. | |
dc.language | eng | |
dc.relation | Nuclear Physics B | |
dc.relation | 3.285 | |
dc.relation | 1,744 | |
dc.rights | Acesso restrito | |
dc.source | Scopus | |
dc.title | R-parity-violating signals for chargino production at LEP II | |
dc.type | Artigo | |