Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $e^+$ and $\bar{p}$ production in $pp$ collisions and the cosmic-ray
  $e^+/\bar{p}$ flux ratio   Secondary astrophysical production of $e^+$ and $\bar{p}$ cosmic rays is
considered. Inclusive $\pi$, $K$, and $\bar{p}$ production cross sections in
$pp$ collisions at large $\sqrt{s}$ are parametrised using recent experimental
data at LHC energies. The astrophysical production rate ratio
$Q_{e^+}/Q_{\bar{p}}$ is calculated for an input cosmic ray proton flux
consistent with local measurements. At $10<E<100$$\sim$GeV the cosmic ray flux
ratio $J_{e^+}/J_{\bar{p}}$ measured by AMS02 falls below the production rate
ratio by about 50\%, while at high energy $E>100$$\sim$GeV the measured flux
ratio coincides with the production rate ratio of the secondary source.

7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph