New determination of the production cross section for secondary positrons and electrons in the Galaxy
Luca Orusa, Mattia Di Mauro, Fiorenza Donato, Michael Korsmeier
SciPost Phys. Proc. 13, 006 (2023) · published 28 September 2023
- doi: 10.21468/SciPostPhysProc.13.006
- Submissions/Reports
Proceedings event
21st International Symposium on Very High Energy Cosmic Ray Interactions
Abstract
The cosmic-ray fluxes of electrons and positrons ($e^{±}$) are measured with high precision by the space-borne particle spectrometer AMS-02. To infer a precise interpretation of the production processes for $e^{±}$ 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 $e^±$ by fitting data from collider experiments. The total differential cross section $d\sigma/dT_{e^±}(p+p→ e^±+X)$ is predicted with an uncertainty of about 5-7% in the energies relevant for AMS-02 positron flux. For further information about this work refer to [Phys. Rev. D 105, 123021 (2022)].
Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 2 Luca Orusa,
- 2 Mattia Di Mauro,
- 1 2 Fiorenza Donato,
- 3 Michael Korsmeier