Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A viable U(1) extended Standard Model with a massive Z' invoking the
  Stueckelberg mechanism   We make a careful re-examination of the possibility that, in a U(1) extension
of the Standard Model, the extra Z' boson may acquire a mass from a
Stueckelberg-type scalar. The model, when all issues of theoretical consistency
are taken into account, contains several attractive new features, including a
high degree of predictability.

32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex