Supersymmetry dileptons and trileptons at the Tevatron

Abstract

We consider the production of supersymmetry neutralinos and charginos in $p\bar{p}$ collisions at the Tevatron, and their subsequent decay via hadronically quiet dileptons and trileptons. We perform our computations in the context of a variety of supergravity models, including generic four-parameter supergravity models, the minimal $SU(5)$ supergravity model, and $SU(5)\times U(1)$ supergravity with string inspired two- and one-parameter moduli and dilaton scenarios. Our results are contrasted with estimated experimental sensitivities for dileptons and trileptons for integrated luminosities of $100\ipb$ and $1\ifb$, which should be available in the short and long terms. We find that the dilepton mode is a needed complement to the trilepton signal when the latter is suppressed by small neutralino leptonic branching ratios. The estimated reaches in chargino masses can be as large as $100\,(150)\GeV$ for $100\ipb\,(1\ifb)$. We also discuss the task left for LEPII once the Tevatron has completed its short-term search for dilepton and trilepton production.

12 pages (LaTeX), 6 figures (included)

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• SUPERSYMMETRY REACH OF AN UPGRADED TEVATRON COLLIDER
• Collider and Dark Matter Phenomenology of Models with Mirage Unification
• Possible Signals of Constrained Minimal Supersymmetry at a High Luminosity Fermilab Tevatron Collider
• Natural SUSY with a bino- or wino-like LSP
• Trilepton production at the CERN LHC: Standard model sources and beyond
• Mixed Higgsino Dark Matter from a Large SU(2) Gaugino Mass
• Supersymmetry: From the Fermi Scale to the Planck Scale
• Supersymmetry and R_b in the light of LEP 1.5
• A string no-scale supergravity model and its experimental consequences
• The Search for Supersymmetry at the Tevatron Collider
• Electroweakinos Hiding in Higgs Searches
• Experimental constraints on a stringy SU(5)$\times$U(1) model
• The Scale of Superpartner Masses and Electroweakino Searches at the High-Luminosity LHC