Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Outlook on the Higgs particles, masses and physical bounds in the Two
  Higgs-Doublet Model   The Higgs sector of models beyond the standard model requires special
attention and study, since through them, a natural explanation can be offered
to current questions such as the big differences in the values of the masses of
the quarks (hierarchy of masses), the possible generation of flavor changing
neutral currents (inspired by the evidence about the oscillations of
neutrinos), besides the possibility that some models, with more complicated
symmetries than those of the standard model, have a non standard low energy
limit. The simplest extension of the standard model known as the
two-Higgs-doublet-model (2HDM) involves a second Higgs doublet. The 2HDM
predicts the existence of five scalar particles: three neutral ($A^{0}$),
($h^{0}$, $H^{0}$) and two charged ($H^{\pm}$). The purpose of this work is to
determine in a natural and easy way the mass eigenstates and masses of these
five particles, in terms of the parameters $\lambda_{i}$ introduced in the
minimal extended Higgs sector potential that preserves the CP symmetry. We
discuss several cases of Higgs mixings and the one in which two neutral states
are degenerate. As the values of the quartic interactions between the scalar
doublets are not theoretically determined, it is of great interest to explore
and constrain their values, therefore we analize the stability and triviality
bounds using the Lagrange multipliers method and numerically solving the
renormalization group equations. Through the former results one can establish
the region of validity of the model under several circumstances considered in
the literature.

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The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol