Characteristic Wino Signals in a Linear Collider from Anomaly Mediated Supersymmetry Breaking

Details Characteristic Wino Signals in a Linear Collider from Anomaly Mediated Supersymmetry Breaking Characteristic Wino Signals in a Linear Collider from Anomaly Mediated Supersymmetry Breaking

2001-04-22

arxiv.org/abs/hep-ph/0104217v1

Phys.Rev. D64 (2001) 115001

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, LaTeX, three PS figures and one EPS figure

Scientific paper

10.1103/PhysRevD.64.115001

Though the minimal model of anomaly mediated supersymmetry breaking has been significantly constrained by recent experimental and theoretical work, there are still allowed regions of the parameter space for moderate to large values of $\tan\beta$. We show that these regions will be comprehensively probed in a ${\sqrt s} =1$ TeV $e^+e^-$ linear collider. Diagnostic signals to this end are studied by zeroing in on a unique and distinct feature of a large class of models in this genre: a neutral winolike Lightest Supersymmetric Particle closely degenerate in mass with a winolike chargino. The pair production processes $e^+e^- \to {\tilde e}_L^\pm {\tilde e}_L^\mp$, ${\tilde e}_R^\pm {\tilde e}_R^\mp$, ${\tilde e}_L^\pm {\tilde e}_R^\mp$, ${\tilde \nu} {\bar {\tilde \nu}}$, $\widetilde \chi^0_1 \widetilde \chi^0_2$, $\widetilde \chi^0_2 \widetilde \chi^0_2$ are all considered at $\sqrt s = 1$ TeV corresponding to the proposed TESLA linear collider in two natural categories of mass ordering in the sparticle spectra. The signals analysed comprise multiple combinations of fast charged leptons (any of which can act as the trigger) plus displaced vertices $X_D$ (any of which can be identified by a heavy ionizing track terminating in the detector) and/or associated soft pions with characteristic momentum distributions.

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