Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Testing Lorentz-symmetry violation via electroweak decays   In this work we introduce CPT-odd non-minimal Lorentz-symmetry violating
couplings to the electroweak sector modifying the interaction between leptons
and gauge bosons. The vertex rules allow us to calculate tree-level processes
modified by the presence of the novel dimension-five operators. For
definitiveness, we investigate the $W$ decay into a lepton-neutrino pair, the
$Z$ decay into pairs of charged and neutral leptons, as well as the decay of
the muon. By comparing the experimental measurements on these processes to our
results we are able to bound several combinations of the background 4-vectors
to be $\lesssim 10^{-4} \, \mbox{GeV}^{-1}$.

9
The categories of this paper are: nlin
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph