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Sumit Basu (Lund University)

Sumit Basu

Postdoctoral Researcher

Sumit Basu (Lund University)

Antihelium-3 fluxes near Earth using data-driven estimates for annihilation cross section

Author

  • S. Acharya
  • S. Basu
  • P. Christiansen
  • O. Matonoha
  • A.F. Nassirpour
  • A. Ohlson
  • A. Oskarsson
  • T. Richert
  • O.V. Rueda
  • D. Silvermyr
  • N. Zurlo

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