Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Implications of LEP Results for SO(10) Grandunification with Two
  Intermediate Stages   We consider the breaking of the grand unification group $SO(10)$ to the
standard model gauge group through several chains containing two intermediate
stages. Using the values of the gauge coupling constants at scale $M_Z$ derived
from recent LEP data, we determine the range of their intermediate and
unification scales. In particular, we identify those chains that permit new
gauge structure at relatively low energy $(\sim 1\, {\rm TeV})$.

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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
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The categories of this paper are: nlin
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The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
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The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
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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: chao-dyn
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The categories of this paper are: stat
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The categories of this paper are: acc-phys