Search for Supersymmetry with Like-Sign Lepton-Tau Events at CDF

Abstract

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 $\sqrt{s}=1.96$ 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 \gevcc. This analysis is the first to extend the LHC searches for electroweak supersymmetric production of gauginos to high $\tan \beta$ and slepton next-to-lightest supersymmetric particle scenarios.

Published in Phys. Rev. Lett

References in corpus (7)

• PYTHIA 6.4 Physics and Manual
• Search for squarks and gluinos in events with jets and missing transverse energy using 2.1 fb-1 of ppbar collision data at sqrt(s)=1.96 TeV
• Search for anomalous production of multilepton events in pp collisions at sqrt(s) = 7 TeV
• Search for associated production of charginos and neutralinos in the trilepton final state using 2.3 fb-1 of data
• Search for electroweak production of charginos and neutralinos using leptonic final states in pp collisions at sqrt(s) = 7 TeV
• Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in sqrt(s) = 7 TeV pp collisions with the ATLAS detector
• Slepton co-NLSPs at the Tevatron

Cited by in corpus (2)

• Measurement of the $W+b$-jet and $W+c$-jet differential production cross sections in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV
• Search for new physics in trilepton events and limits on the associated chargino-neutralino production at CDF