Search for chargino - neutralino production in $p\bar{p}$ collisions at $\sqrt{s} = 1.8$ TeV

We have searched for chargino-neutralino production (\chichi) in 1.8 TeV \ppb\sp collisions, followed by their leptonic decays \chione\dk\chizero\lnu\psp and \chitwo\dk\chizero\lplm. These trilepton events are expected within a framework of the Minimal Supersymmetric Standard Model (MSSM). In a 19.1 pb

~{-1}

data sample collected with the Collider Detector at Fermilab, no trilepton events were observed. Upper limits on \sigma(\ppb\dk\chichi)\cdot BR(\chichi\dk 3 \ell + X) were obtained for various MSSM parameter space regions, yielding new 95\% confidence level lower limits for the neutralino (\chitwo) mass which extended as high as 49 \mgev.

Note:

12 pages, 1 figure, http://www-cdf.fnal.gov/physics/pub96/cdf3440_1a_trilep_prl.ps, submitted to Phys. Rev. Letters

anti-p p: colliding beams
colliding beams: anti-p p
anti-p p: inclusive reaction
sparticle: pair production
pair production: sparticle
sparticle: charged particle
sparticle: neutral particle
sparticle: leptonic decay
leptonic decay: sparticle
final state: (3lepton)

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