Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Suppression of Proton Decay in the Missing-Partner Model for
  Supersymmetric SU(5) GUT   We construct a missing-partner model for supersymmetric SU(5) GUT assuming
the Peccei-Quinn symmetry, in which the SU(5) gauge coupling constant remains
in the perturbative regime below the gravitational scale $\sim2.4\times
10^{18}\GEV$. The Peccei-Quinn symmetry suppresses the dangerous dimension-five
operators for the nucleon decay much below the limit from the present
proton-decay experiments. We also stress that due to this suppression mechanism
our model can accommodate even the large $\tan\beta_H$ ($\sim$ 60) scenario
which has been recently suggested to explain the observed value of the
$m_b/m_\tau$ ratio.

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The categories of this paper are: comp-gas
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The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
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The categories of this paper are: cmp-lg
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The categories of this paper are: econ
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin