Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Decay H^+ -> W^+ gamma in a nonlinear R_xi-gauge   A new evaluation of the charged Higgs boson decay $H^+ -> W^+\gamma$ is
presented in the context of the general two-Higgs doublet model. A nonlinear
$R_\xi$-gauge which considerably simplifies the calculation is introduced and
simple expressions are obtained for the fermionic and bosonic contributions.
The $H^+ -> W^+\gamma$ branching ratio is analyzed for several values of the
parameters of the model. Although this decay can have a branching fraction as
large as $10^{-4}$ in a certain region of the parameter space, it is found that
such a region is disfavored by the most recent constraints on $b -> s\gamma$,
$g-2$ of the muon, $Z -> b \bar b$, and the $\rho$ parameter, along with the
exclusions from direct searches at the CERN $e^-e^+$ LEP collider. The
possibility of detecting this decay at future colliders is discussed.

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The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
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The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom