Search for chargino-neutralino production in p-pbar collisions at 1.96 TeV with high pT leptons

TL;DR

This paper reports a search for chargino-neutralino production in proton-antiproton collisions at 1.96 TeV using high transverse momentum leptons, setting limits on their masses based on collected collider data.

Contribution

It introduces a new search for chargino-neutralino production at Tevatron energies, providing limits on their masses in specific supersymmetric models.

Findings

No significant excess over standard model predictions.

Set a 95% confidence level limit at 151 GeV/c^2 for chargino mass.

Constrained supersymmetric parameter space based on collider data.

Abstract

We present a search for the associated production of charginos and neutralinos in p-pbar collisions at 1.96 TeV. The data were collected at the Collider Detector at Fermilab (CDF II) and correspond to integrated luminosities between 0.7 and 1.0 fb-1. We look for final states with one high pT electron or muon, and two additional leptons. Our results are consistent with the standard model expectations, and we set limits on the cross section as a function of the chargino mass in three different supersymmetric scenarios. For a specific MSSM scenario with no slepton mixing we set a 95 % C.L. limit at 151 GeV/c^2.