A Non-Standard String/SUSY Scenario and its Phenomenological Implications

Abstract

We investigate the phenomenology of an orbifold string model in which supersymmetry breaking is dominated by the overall `size' modulus field and all matter fields are in the untwisted sector. The possibly close degeneracy of the lightest neutralino and chargino and the possibly small splitting between the gluino and chargino/LSP mass imply that discovery of supersymmetry at future colliders could be more challenging than anticipated. Specialized search strategies and particular detector features could play an important role. For preferred model parameter choices, the phenomenology of dark matter in the universe is significantly modified.

arXiv comment43 pages, latex, corrections (as outlined in recent Addendum [hep-ph/9902309]) to the treatment of the decay of the lightest chargino to the lightest neutralino, when they are closely degenerate in mass, are implemented, and the associated minor changes in phenomenology are incorporated

References in corpus (15)

• The Neutralino Relic Density in Minimal N=1 Supergravity
• Towards a Theory of Soft Terms for the Supersymmetric Standard Model
• Implications of non-universality of soft terms in supersymmetric grand unified theories
• SIGNALS FOR MINIMAL SUPERGRAVITY AT THE CERN LARGE HADRON COLLIDER: MULTI-JET PLUS MISSING ENERGY CHANNEL,
• Predictions in SU(5) Supergravity Grand Unification with Proton Stability and Relic Density Constraints
• Non-Universal GUT Corrections to the Soft Terms and their Implications in Supergravity Models
• Searching for Invisible and Almost Invisible Particles at e^+e^- Colliders
• Problems for Supersymmetry Breaking by the Dilaton in Strings from Charge and Color Breaking
• Non-universal soft scalar masses in supersymmetric theories
• Phenomenological Aspects of Supersymmetric Standard Models without Grand Unification
• Accurate Neutralino Relic Density Computations in Supergravity Models
• Supersymmetry Reach of Tevatron Upgrades: A Comparative Study
• Supersymmetric Models with a Gauge Singlet and Non-Universal Soft Terms from Orbifold String Theory
• A Decisive Test of Superstring-Inspired E(6) Models
• Implications of Non-universal Soft Masses on Gauge Coupling Unification

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