Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Phenomenology of Extra Neutral Gauge Bosons   The phenomenological constraints on extra neutral gauge bosons at present and
at future colliders are reviewed. Special attention is paid to the influence of
radiative corrections, systematic errors, and kinematic cuts on the Z'
constraints. Simple estimates of the Z' constraints from different reactions
are derived. They make the physical origin of these constraints transparent.
The results existing in the literature are summarized and compared with the
estimates. The consequence of model assumptions on the Z' constraints is
discussed. The paper starts with an overview of Z' parameters and the possible
links between them by model assumptions. It continues with a discussion of Z'
limits and Z' measurements in different reactions at e+e- and mu+mu- colliders.
It follows an overview of the corresponding limits at proton colliders.
Possible Z' constraints from other reactions as ep collisions, atomic parity
violation, neutrino scattering and cosmology are briefly mentioned.

6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin