Prospects for Supersymmetry at LEP2

Abstract

Working within the framework of the minimal supergravity model with gauge coupling unification and radiative electroweak symmetry breaking (SUGRA), we map out regions of parameter space explorable by experiments at LEP2, for center of mass energy options of $\sqrt{s}=150,175$, $190$ and 205 GeV. We compute signals from all accessible $2\to 2$ SUSY pair production processes using the ISAJET simulation program, and devise cuts that enhance the signal relative to Standard Model backgrounds, and which also serve to differentiate various supersymmetric processes from one another. We delineate regions of SUGRA parameter space where production of neutralino pairs, chargino pairs, slepton pairs and the production of the light Higgs scalar of SUSY is detectable above Standard Model backgrounds and distinguishable from other SUSY processes. In addition, we find small regions of SUGRA parameter space where $\te\te$, $\tz_2\tz_2$ and $\tnu_L\tnu_L$ production yields spectacular events with up to four isolated leptons. The combined regions of parameter space explorable by LEP2 are compared with the reach of Tevatron Main Injector era experiments. Finally, we comment on how the reach via the neutralino pair channel is altered when the radiative electroweak symmetry breaking constraint is relaxed.

22 page REVTEX file + 9 uuencoded figures; a uuencoded PS file with PS figures is available via anonymous ftp at ftp://hep.fsu.edu/preprints/baer/FSUHEP950501.uu

References in corpus (10)

• Naturalness and superpartner masses or when to give up on weak scale supersymmetry
• Multi-Channel Search for Minimal Supergravity at $p\bar{p}$ and $e^{+}{e}^{-}$ Colliders
• The Search for Top Squarks at the Fermilab Tevatron Collider
• Impact of R-Parity Violation on Supersymmetry Searches at the Tevatron
• New Signals for Gluinos and Squarks of Supergravity at the Tevatron Collider
• Determination of Fundamental Supersymmetry Parameters from Chargino Production at Lepii
• Supercollider Signatures of Supergravity Models with Yukawa Unification
• Supersymmetry at the DiTevatron
• Sparticle and Higgs Production and Detection at LEPII in two Supergravity Models
• Experimental aspects of SU(5)xU(1) supergravity

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• Probing Supergravity Grand Unification in the Brookhaven g-2 Experiment
• Signals for Minimal Supergravity at the CERN Large Hadron Collider II: Multilepton Channels
• QCD Improved $b\to s\gamma$ Constraints on the Minimal Supergravity Model
• Signals for gauge-mediated supersymmetry breaking models at the CERN LEP2 collider
• Supersymmetry Reach of Tevatron Upgrades: The Large $\tan \beta$ Case
• SUSY Normal Scalar Mass Hierarchy Reconciles (g-2), b->s,gamma and Relic Density
• Indirect, Direct and Collider Detection of Neutralino Dark Matter
• Constraints on the Minimal Supergravity Model from Non-standard Vacua
• Supersymmetry Studies at Future Linear $e^{+}{e}^{-}$ Colliders
• Challenging weak-scale supersymmetry at colliders
• Supersymmetry: From the Fermi Scale to the Planck Scale
• The Reach of CERN LEP2 and Fermilab Tevatron Upgrades for Higgs Bosons in Supersymmetric Models
• Determining the parameters of the Minimal Supergravity Model from 2l + E_T^{miss} + (jets) final states at LHC
• Probing Neutralino Resonance Annihilation via Indirect Detection of Dark Matter
• Search for the next-to-lightest neutralino
• Tau Polarizations in the Three-body Slepton Decays with Stau as the NLSP