Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stuckelberg Axions and the Effective Action of Anomalous Abelian Models
  2. A SU(3)_C x SU(2)_W x U(1)_Y x U(1)_B model and its signature at the LHC   We elaborate on an extension of the Standard Model with a gauge structure
enlarged by a single anomalous U(1), where the presence of a Wess-Zumino term
is motivated by the Green-Schwarz mechanism of string theory. The additional
gauge interaction is anomalous and requires an axion for anomaly cancelation.
The pseudoscalar implements the St\"{u}ckelberg mechanism and undergoes mixing
with the standard Higgs sector to render the additional U(1) massive. We
consider a 2-Higgs doublet model. We show that the anomalous effective vertices
involving neutral currents are potentially observable. We clarify their role in
the case of simple processes such as $Z^*\to \gamma \gamma$, which are at
variance with respect to the Standard Model. A brief discussion of the
implications of these studies for the LHC is included.

12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol