Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraints on free parameters of the simplest bilepton gauge model from
  the neutral kaon system mass difference   We consider the contributions of the exotic quarks and gauge bosons to the
mass difference between the short- and the long-lived neutral kaon states in
$SU(3)_C \times SU(3)_L \times U(1)_N$ model. The lower bound $M_{Z'} \sim$ 14
TeV is obtained for the extra neutral gauge boson ${Z'}^0$. Ranges for values
of one of the exotic quark masses and quark mixing parameters are also
presented.

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The categories of this paper are: physics
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The categories of this paper are: math-ph
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The categories of this paper are: math
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
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The categories of this paper are: hep-th
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The categories of this paper are: astro-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: econ
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The categories of this paper are: patt-sol
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The categories of this paper are: quant-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin