Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New determination of the production cross section for secondary
  positrons and electrons in the Galaxy   The cosmic-ray fluxes of electrons and positrons ($e^{\pm}$) are measured
with high precision by the space-borne particle spectrometer AMS-02. To infer a
precise interpretation of the production processes for $e^{\pm}$ in our Galaxy,
it is necessary to have an accurate description of the secondary component,
produced by the interaction of cosmic-ray proton and helium with the
interstellar medium atoms. We determine new analytical functions of the Lorentz
invariant cross section for the production of $\pi^\pm$ and $K^\pm$ by fitting
data from collider experiments. We also evaluate the invariant cross sections
for several other channels, involving for example hyperon decays, contributing
at the few \% level on the total cross section. For all these particles, the
relevant 2 and 3 body decay channels are implemented, with the polarized
$\mu^\pm$ decay computed with next-to-leading order corrections. The cross
section for scattering of nuclei heavier than protons is modeled by fitting
data on $p+C$ collisions. The total differential cross section
$d\sigma/dT_{e^\pm}(p+p\rightarrow e^\pm+X)$ is predicted from 10 MeV up to 10
TeV of $e^\pm$ energy with an uncertainty of about 5-7\% in the energies
relevant for AMS-02 positron flux, thus dramatically reducing the precision of
the theoretical model with respect to the state of the art. Finally, we provide
a prediction for the secondary Galactic $e^\pm$ source spectrum with an
uncertainty of the same level. As a service for the scientific community, we
provide numerical tables and a script to calculate energy-differential cross
sections.

24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con