Determination of Fundamental Supersymmetry Parameters from Chargino Production at Lepii

Abstract

If accessible at LEP II, chargino production is likely to be one of the few available supersymmetric signals for many years. We consider the prospects for the determination of fundamental supersymmetry parameters in such a scenario. The study is complicated by the dependence of observables on a large number of these parameters. We propose a straightforward procedure for disentangling these dependences and demonstrate its effectiveness by presenting a number of case studies at representative points in parameter space. Working in the context of the minimal supersymmetric standard model, we find that chargino production by itself is a fairly sensitive probe of the supersymmetry-breaking sector. For significant regions of parameter space, it is possible to test the gaugino mass unification hypothesis and to measure the gaugino contents of the charginos and neutralinos, thereby testing the predictions of grand unification and the viability of the lightest supersymmetric particle as a dark matter candidate. For much of the parameter space, it is also possible to set limits on the mass of the electron sneutrino, which provide a valuable guide for future particle searches.

52pp, Revtex, 30 figures available upon request, SLAC-PUB-6497, RU-94-67 (text and figures available in ps form by anonymous ftp from preprint.slac.stanford.edu, directory pub/preprints/hep-ph/9408)

References in corpus (8)

• Evidence for Top Quark Production in $\bar{p}p$ Collisions at $\sqrt{s}=1.8$ TeV
• Precise Measurement of the Left-Right Cross Section Asymmetry in $Z$ Boson Production by $\ee$ Collisions
• The complete radiative corrections to the gaugino and Higgsino masses in the Minimal Supersymmetric Model
• Radiative Corrections to Neutralino and Chargino Masses in the Minimal Supersymmetric Model
• Implications of the Partial Width Z->bb for Supersymmetry Searches and Model-Building
• Aspects of Chargino-Neutralino Production at the Tevatron Collider
• One loop corrections to the Neutralino sector and Radiative Electroweak Breaking in the MSSM
• Squark Mass Determination at the Next Generation of Linear $e^{+}{e}^{-}$ Colliders

Cited by in corpus (24)

• Coherent gamma-gamma and gamma-A interactions in very peripheral collisions at relativistic ion colliders
• Neutralino Dark Matter in Focus Point Supersymmetry
• Neutralino Dark Matter at 14 and 100 TeV
• Naturalness and superpartner masses or when to give up on weak scale supersymmetry
• Confronting the Minimal Supersymmetric Standard Model with the Study of Scalar Leptons at Future Linear e+e- Colliders
• TESTING SUPERSYMMETRY AT THE NEXT LINEAR COLLIDER
• Wino-like Minimal Dark Matter and future colliders
• Measurement of beauty and charm production in deep inelastic scattering at HERA and measurement of the beauty-quark mass
• CP Phases in Correlated Production and Decay of Neutralinos in the Minimal Supersymmetric Standard Model
• Challenging weak-scale supersymmetry at colliders
• The Light Higgsino-Gaugino Window
• Prospects for Supersymmetry at LEP2
• Measuring SUSY Parameters at LEP II Using Chargino Production and Decay
• Radiative Corrections to Chargino Production in Electron-Positron Collisions
• Chargino Pair Production at LEP2 with Broken R-Parity: 4-jet Final States
• Systematics of single superpartners production at leptonic colliders
• Report of the 1997 LEP2 Phenomenology Working Group on `Searches' (Oxford)
• Radiative Corrections to Chargino Production in Electron-Positron Collisions with Polarised Beams
• Chargino mass determination at a muon collider
• Chargino Production at LEP2 in a Supergravity Model
• A Relation on Gaugino Masses in a Supersymmetric SO(10)_GUT x SO(6)_H Unified Model
• NLO Polarized Chargino pair Production in Electron Positron Annihilation
• New Probes of Supersymmetry Beyond the Minimal Framework
• Probing the sgeneration spectrum in chargino decays