David Silvermyr
Senior lecturer
Antihelium-3 fluxes near Earth using data-driven estimates for annihilation cross section
Author
Summary, in English
Antinuclei found in cosmic rays could provide a smoking gun signal for dark matter as this signal is virtually background free. The study of 3He cosmic rays requires the knowledge of their production, propagation in the galaxy and annihilation cross-section. While the former two have been already estimated with data-driven methods, there were no experimental data available for the 3He inelastic cross section. We measured for the first time the inelastic cross section of 3He using the ALICE detector itself as a target. To study the effect of 3He annihilation in the galaxy and estimate the transparency of the galaxy, the 3He source functions and annihilation cross sections were implemented in GALPROP. © Copyright owned by the author(s) under the terms of the Creative Commons.
Department/s
- Particle and nuclear physics
- eSSENCE: The e-Science Collaboration
Publishing year
2022
Language
English
Publication/Series
Proceedings of Science
Volume
395
Document type
Conference paper
Topic
- Subatomic Physics
Keywords
- Annihilation
- Cosmic rays
- Cosmology
- Annihilation cross sections
- Dark matter
- Data driven
- Data-driven methods
- Inelastic cross sections
- Near-Earth
- Source functions
- Galaxies
Conference name
37th International Cosmic Ray Conference
Conference date
2021-07-12 - 2021-07-23
Conference place
Berlin, Germany
Status
Published
ISBN/ISSN/Other
- ISSN: 1824-8039