Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Probing antigravitational effects through CP violation on the Moon   The environment on the Moon has numerous features that make it interesting
not only for the study of astrophysical phenomena, but also elementary particle
physics. In fact, vacuum conditions, low gravity, and exposure to a relatively
intense irradiation of cosmic protons covering a large energy spectrum, make
the lunar environment attractive for a wide range of particle physics
experiments otherwise unworkable on Earth. We suggest one such experiment
measuring the difference between the amount of CP violation as measured on the
surface of the Earth and on the surface of the Moon, which could indicate
quantum gravitational effects

24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg