Search for chargino-neutralino production in {ital p{bar p}} collisons at {radical}{ital s}=1.8 TeV
We have searched for chargino-neutrlaino production ({tilde {chi}}{sub 1}{sup {plus_minus}}{tilde {chi}}{sup 0}{sub 2}) in 1.8 TeV {bar {ital pp}} collisions, followed by their leptonic decays {tilde {chi}}{sub 1}{sup {plus_minus}}{r_arrow}{tilde {chi}}{sup 0}{sub 1}l{sup {plus_minus}}{nu} and {tilde {chi}}{sup 0}{sub 2}{r_arrow}{tilde {chi}}{sup 0}{sub 1}l{sup +}l{sup {minus}}. These trilepton events are expected within a framework of the minimal supersymmetric standard model (MSSM). In a 19.1 pb{sup {minus}1} data sample collected with a Collider Detector at Fermilab, no trilepton events were observed. Upper limits on {sigma}({bar {ital pp}}{r_arrow}{tilde {chi}}{sub 1}{sup {plus_minus}}{tilde {chi}}{sup 0}{sub 2}){ital B}({tilde {chi}}{sub 1}{sup {plus_minus}}{tilde {chi}}{sup 0}{sub 2}{r_arrow}3l+{ital X}) were obtained for various MSSM parameter space regions, yielding new 95{percent} confidence level lower limits for the neutralino ({tilde {chi}}{sup 0}{sub 2}) mass which extend as high as 49 GeV/{ital c}{sup 2}. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 288958
- Journal Information:
- Physical Review Letters, Vol. 76, Issue 23; Other Information: PBD: Jun 1996
- Country of Publication:
- United States
- Language:
- English
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