Probing models with near degeneracy of the chargino and lightest supersymmetric particle at a lineare+e−collider

2001/03/31 by John F. Gunion, Stephen Mrenna, S. Mrenna · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.64.075002

published as Phys.Rev. D64 (2001) 075002 · 37 pages, 13 figures; revised version includes additional references

arxiv created 2001/04/25 · openalex publication_date 2001/09/04 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

For some choices of soft supersymmetry-breaking parameters, the lighest supersymmetric particle is a stable neutralino \stackrel\ifmmode \else \~\fi\ensuremathχ₁⁰ that is almost degenerate in mass with the lightest chargino \stackrel\ifmmode \else \~\fi\ensuremathχ₁^\ifmmode±\else\textpm\fi (\ensuremathΔm_\stackrel\ifmmode \else \~\fi\ensuremathχ\ensuremath≡m_\stackrel\ifmmode \else \~\fi\ensuremathχ₁^\ifmmode±\else\textpm\fi\ensuremath-m_\stackrel\ifmmode \else \~\fi\ensuremathχ₁⁰\ensuremath∼m_\ensuremathπ\ensuremath-fewGeV), and all other sparticles are relatively heavy. We discuss the potential of a √(s)\ensuremath∼600GeV e⁺e^\ensuremath- collider for studying such models.

Citations

• Observability of “invisible” or “nearly invisible” charginos

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• Neutralino dark matter at 14 TeV and 100 TeV