Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Prospects for Testing Lorentz and CPT Invariance in the Top-Quark Sector   We present how to further the search for Lorentz and CPT violation in the
top-quark sector after the first measurement in this sector by D0. We compute
the Lorentz-violating matrix element for top pair production via gluon fusion,
which allows a similar but more precise measurement at the LHC. For CPT
violation, we analyze single-top production, derive the modified matrix
elements, and predict possible signals.

2
The categories of this paper are: math
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int