Experimental Search for Chargino and Neutralino Production in Supersymmetry Models with a Light Gravitino

B. Abbott et al. (D0 Collaboration)
Phys. Rev. Lett. 80, 442 – Published 19 January 1998
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Abstract

We search for inclusive high ET diphoton events with large missing transverse energy in pp¯ collisions at s=1.8TeV. Such events are expected from pair production of charginos and neutralinos within the framework of the minimal supersymmetric standard model with a light gravitino. No excess of events is observed. In that model, and assuming gaugino mass unification at the GUT scale, we obtain a 95% C.L. exclusion region in the supersymmetry parameter space and lower mass bounds of 150GeV/c2 for the lightest chargino and 77GeV/c2 for the lightest neutralino.

  • Received 4 August 1997

DOI:https://doi.org/10.1103/PhysRevLett.80.442

©1998 American Physical Society

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Vol. 80, Iss. 3 — 19 January 1998

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