Tevatron and LEP-II Probes of Minimal and String-Motivated Supergravity Models

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

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44 pages, requires phyzzx.tex, tables.tex, full postscript file including embedded figures available via anonymous ftp at ucdh

Scientific paper

10.1103/PhysRevD.51.2159

We explore the ability of the Tevatron to probe Minimal Supersymmetry with high energy scale boundary conditions motivated by supersymmetry breaking in the context of supergravity/superstring theory. A number of boundary condition possibilities are considered: dilaton-like string boundary conditions applied at the standard GUT unification scale or alternatively at the string scale; and extreme (``no-scale'') minimal supergravity boundary conditions imposed at the GUT scale or string scale. For numerous specific cases within each scenario the sparticle spectra are computed and then fed into ISAJET 7.07 so that explicit signatures can be examined in detail. We find that, for some of the boundary condition choices, large regions of parameter space can be explored via same-sign dilepton and isolated trilepton signals. For other choices, the mass reach of Tevatron collider experiments is much more limited. We also compare mass reach of Tevatron experiments with the corresponding reach at LEP 200.

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