Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Effects on $S$, $T$, and $U$ from Higher-Dimensional Fermion
  Representations   Inspired by a new class of walking technicolor models recently proposed using
higher-dimensional technifermions, we consider the oblique corrections from
heavy non-degenerate fermions with two classes of higher-dimensional
representations of the electroweak gauge group itself. One is chiral SM-like,
and the other is vector-like. In both cases, we obtain explicit expressions for
$S$, $T$, $U$ in terms of the fermion masses. We find that to keep the $T$
parameter ultraviolet-finite there must be a stringent constraint on the mass
non-degeneracy of a heavy fermion multiplet.

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The categories of this paper are: math
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The categories of this paper are: alg-geom
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The categories of this paper are: atom-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: comp-gas
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The categories of this paper are: stat
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: physics
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: mtrl-th