Phenomenology of Gluino Searches at the Tevatron

Present data indicates that the gluino (if it exists) must be heavier than about 95~GeV. During the next few years as the Tevatron integrated luminosity increases, gluino searches will be able to probe the mass range between 100 and 200~GeV. For masses in this range, a variety of gluino decay modes can provide viable signatures for gluino detection. Apart from the classic missing transverse energy signal, the detection of high transverse momentum like-sign dileptons may be the cleanest signature for gluino production. Other signatures such as the production of a hard photon in the gluino cascade decay may also play an important role in confirming the supersymmetric origin of events originating from gluino production and decay.Comment: 17 pages, PHYZZX format (with Ray Cowan's TABLES.TEX macros), invited talk presented at the SUSY-93 Workshop, Northeastern University, Boston, MA, 29 March--1 April 199

New LHC Benchmarks for the CP-conserving Two-Higgs-Doublet Model

We introduce a strategy to study the parameter space of the general, CP-conserving, two-Higgs-doublet Model (2HDM) with a softly broken Z_2-symmetry by means of a new "hybrid" basis. In this basis the input parameters are the measured values of the mass of the observed Standard Model (SM)-like Higgs boson and its coupling strength to vector boson pairs, the mass of the second CP-even Higgs boson, the ratio of neutral Higgs vacuum expectation values, and three additional dimensionless parameters. Using the hybrid basis, we present numerical scans of the 2HDM parameter space where we survey available parameter regions and analyze model constraints. From these results, we define a number of benchmark scenarios that capture different aspects of non-standard Higgs phenomenology that are of interest for future LHC Higgs searches.Comment: 38 pages, 16 figures, 11 tables. Typographical errors corrected, a clarifying remark added to the caption of Fig. 2, and two references updated in Version