Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Semi-perturbative unification with extra vector-like families   We make a comprehensive analysis of an extended supersymmetric model(ESSM)
obtained by adding a pair of vector-like families to the minimal supersymmetric
standard model and having specific forms of 5 x 5 fermion mass matrices. The
singlet Higgs couplings which link the ordinary to vector-like generations do
not have the renormalization effects of the gauge interactions and hence the
"quasi-infrared fixed point" near the scale of the top quark mass. The two-loop
Yukawa effects on gauge couplings lead to an unified coupling $\alpha_X$ around
0.2 with an unification scale M_X of 10^{16.9} GeV. Large Yukawa effects in the
high energy region arrest the growth of the QCD coupling near M_X making the
evolution flat. The renormalization effects of the vector-like generations on
soft mass parameters has important effects on the charge and color
breaking(CCB)minima. We will show that there exists parameter space where there
is no charge and color breaking. We will also demonstrate that there exists
minima of the Higgs potential which satisfies the mass of the Z boson but avoid
CCB. Upper limits on the mass of the lightest Higgs boson from the one-loop
effective scalar potential is obtained for sets of universal soft supersymmetry
breaking mass parameters.

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The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
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The categories of this paper are: gr-qc
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The categories of this paper are: cs
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex