Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Forbidden and invisible Z boson decays in covariant theta-exact
  noncommutative standard model   The triple neutral gauge boson and direct U(1)_Y-neutrino interactions, being
absent in ordinary field theory, can arise quite naturally in noncommutative
gauge field theories. Using non-perturbative methods and a Seiberg-Witten map
based covariant approach to noncommutative gauge theory, we have found
theta-exact expressions for both interactions, thereby eliminating previous
restrictions to low-energy phenomena. In particular we obtain for the first
time the covariant, theta-exact, triple neutral gauge boson interactions within
the noncommutative Standard Model gauge sector including an additional
gauge-field deformation freedom. Finally we discuss implications for Z->2gamma
and Z->neutrino-pair decays, and show that our results behave quite reasonably
throughout all interaction energy scales.

31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
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The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
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The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
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The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys