Experimental constraints on a stringy SU(5)$\times$U(1) model

Details Experimental constraints on a stringy SU(5)$\times$U(1) model Experimental constraints on a stringy SU(5)$\times$U(1) model

1996-01-12

arxiv.org/abs/hep-ph/9601261v2

Phys.Rev.D53:5253-5257,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, LaTeX, 4 figures (included) Slightly revised version to appear in Phys. Rev. D (May 1 issue); noted that trilepton s

Scientific paper

10.1103/PhysRevD.53.5253

We re-examine the phenomenological aspects of a recently proposed string-derived SU(5)$\times$U(1) one-parameter supergravity model, and explore the sensitivity of the model predictions to variations in the strong coupling and the string unification scale. We also perform an analysis of the constraints on the parameter space of the model in light of the recent Tevatron trilepton data and the LEP~1.5 chargino and slepton data. We obtain $m_{\chi^\pm_1}\gsim70\GeV$, which excludes one-third of the parameter space of the model. The remainder of the parameter space should be probed by ongoing analyses of the Tevatron trilepton data and forthcoming LEP~2 runs.

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