Impact of R-Parity Violation on Supersymmetry Searches at the Tevatron

Abstract

We evaluate cross sections for $\eslt$, 1$\ell$ and various dilepton and multilepton event topologies that result from the simultaneous production of all sparticles at the Tevatron collider, both within the minimal model framework as well as in two different $R$-parity violating scenarios. Our analysis assumes that these $R$-violating couplings are small, and that their sole effect is to cause the lightest supersymmetric particle to decay inside the detector. We reassess future strategies for sparticle searches at the Tevatron, and quantify by how much the various signals for supersymmetry could differ from their minimal model expectations, if $R$-parity is not conserved due to either baryon number or lepton number violating operators. We also evaluate the Tevatron reach in $m_{\mathrm{tg}}$ for the various models, and find that rate-limited multilepton signals ultimately provide the largest reach for both $R$-parity conserving and $R$-parity violating cases.

preprint nos. FSU-HEP-941001, UR-1387, ER-40685-836 and UH-511-807-94, 13 pages (REVTEX) plus 3 uuencoded figures attached

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• Large $R$-parity Violating Couplings and Grand Unification
• The Reach of Fermilab Tevatron Upgrades for SU(5) Supergravity Models with Non-universal Gaugino Masses
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• Constraining top squark in R-parity violating SUSY model using existing Tevatron data
• Probing R-parity violating models of neutrino mass at the Tevatron via top Squark decays
• Addressing μ-b_μand proton lifetime problems and active neutrino masses in a U(1)^\prime-extended supergravity model
• Implications of the HERA Events for the R-Parity Breaking SUSY Signals at Tevatron