Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Implications of the Partial Width Z->bb for Supersymmetry Searches and
  Model-Building   Assuming that the actual values of the top quark mass at FNAL and of the
ratio of partial widths Z->bb/Z->hadrons at LEP are within their current
one-sigma reported ranges, we present a No-Lose Theorem for superpartner
searches at LEP II and an upgraded Tevatron. We impose only two theoretical
assumptions: the Lagrangian is that of the Minimal Supersymmetric Standard
Model with arbitrary soft-breaking terms, and all couplings remain perturbative
up to scales of order 10^16 GeV; there are no assumptions about the soft SUSY
breaking parameters, proton decay, cosmology, etc. In particular, if the LEP
and FNAL values hold up and supersymmetry is responsible for the discrepancy
with the SM prediction of the partial width of Z->bb, then we must have
charginos and/or top squarks observable at the upgraded machines. Furthermore,
little deviation from the SM is predicted within "super-unified" SUSY. Finally,
it appears to be extremely difficult to find any unified MSSM model, regardless
of the form of soft SUSY breaking, that can explain the partial width for large
tan(beta); in particular, no model with top-bottom-tau Yukawa coupling
unification appears to be consistent with the experiments.

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The categories of this paper are: astro-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: adap-org
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The categories of this paper are: funct-an
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The categories of this paper are: nlin
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The categories of this paper are: q-bio
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The categories of this paper are: hep-lat
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The categories of this paper are: stat
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The categories of this paper are: q-alg
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The categories of this paper are: math
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The categories of this paper are: comp-gas
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The categories of this paper are: physics
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The categories of this paper are: cond-mat
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The categories of this paper are: math-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: chem-ph