A search for chargino-neutralino production at the Fermilab Tevatron Collider

Thesis/Dissertation · Sun Nov 30 23:00:00 EST 1997

DOI:https://doi.org/10.2172/572577· OSTI ID:572577

Tannenbaum, Benn ^[1]

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1. New Mexico Univ., Albuquerque, NM (United States)

We have searched for evidence of supersymmetry with the Collider Detector at Fermilab using trilepton events in p$$\bar{p}$$ collisions at √s = 1.8 TeV. In the Minimal Supersymmetric Standard Model (MSSM), we expect trilepton events from chargino-neutralino ($$\tilde{χ}$$^±₁$$\tilde{χ}$$⁰₂) pair production, with subsequent decay into leptons. In all possible combinations of electron and muon channels, we observe no candidate events in 107 pb^-1 of data. We present limits on chargino and neutralino production within the framework of a supergravity inspired MSSM: σ_{$$\tilde{χ}$$}^±₁$$\tilde{χ}$$⁰₂ ∙ BR($$\tilde{χ}$$^±₁$$\tilde{χ}$$⁰₂ → 3l + X) < 0.34 pb and M_{$$\tilde{χ}$$}^±₁} > 81.5 GeV/c² for tan β = 2, μ = -600 GeV/c²$$\tilde{q}$$ = M_{$$\tilde{g}$$}. We also present limits on a SU(5) x U(1) supergravity model and a 4 and 1/2 parameter Minimal SUGRA model.

• Research Organization: New Mexico Univ., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER)
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 572577
• Report Number(s): DOE/CH/03000--T30; ON: DE98052131; BR: KA HEP
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
FERMILAB TEVATRON
PARTICLE PRODUCTION
SPARTICLES