Can SUSY be found at the Tevatron Run II ?

Abstract

Searches for SUSY particles are the main physics focus of the ongoing Run IIa of the Tevatron. LEP results have constrained heavily the Minimal Supersymmetric Standard Model. In this paper the results obtained at LEP and the Tevatron Run I are analysed within two consistent scenarios: the gravity-mediated MSSM framework and the minimal SUGRA scenario. In these frameworks limits much beyond the kinematic reach of LEP are set, and the allowed mass range for particles which are not directly observable at LEP is explored. These results can be used to evaluate searches at the Tevatron Run II. Both R-parity conserving and violating scenarios are considered. Model-dependence and coverage of LEP results is discussed in view of searches at the Tevatron Run II, and a conservative review of some of the other constraints is given. Consequences of the light Higgs boson of the Minimal Supersymmetric Standard Model with mass close to 114-117 GeV and branching ratio to b bar b consistent with the one expected in the Standard Model are examined.