We present a search for chargino-neutralino associated production using like electric charge dilepton events collected by the CDF II detector at the Fermilab Tevatron in proton-antiproton collisions at √s=1.96 TeV. One lepton is identified as the hadronic decay of a tau lepton, while the other is an electron or muon. In data corresponding to 6.0 fb-1 of integrated luminosity, we obtain good agreement with standard model predictions and set limits on the chargino-neutralino production cross section for simplified gravity- and gauge-mediated models. As an example, assuming that the chargino and neutralino decays to taus dominate, in the simplified gauge-mediated model we exclude cross sections greater than 300 fb at 95% credibility level for chargino and neutralino masses of 225 GeV/c2. This analysis is the first to extend the LHC searches for electroweak supersymmetric production of gauginos to high tanâ¡β and slepton next-to-lightest supersymmetric particle scenarios. © 2013 American Physical Society.
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1103/PhysRevLett.110.201802|
|Codice identificativo ISI:||WOS:000319198000004|
|Codice identificativo Scopus:||2-s2.0-84877980729|
|Titolo:||Search for supersymmetry with like-sign lepton-tau events at CDF|
|Appare nelle tipologie:||1.1 Articolo in rivista|