Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Right-handed neutrino mass and bottom-tau ratio in strong coupling
  unification   The recent results of neutrino experiments indicate the existence of the
right-handed neutrinos with masses around intermediate scale, which affects the
prediction of the bottom-tau mass ratio. In the minimal supersymmetric standard
model, this effect largely depends on the right-handed neutrino mass scale and
then may severely limit its lower bound. In this letter, we show that in the
case of strong coupling unification the bottom-tau mass ratio is little
affected by the presence of the right-handed neutrinos. This is because of the
infrared fixed-point behavior of Yukawa couplings, which is a common feature of
this kind of model.

13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
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The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol