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  • Letter
  • Open Access

Indications of electron emission from the deuteron-deuteron threshold resonance

K. Czerski1,*, R. Dubey1, M. Kaczmarski1, A. Kowalska2, N. Targosz-Ślęczka1, G. Das Haridas1, and M. Valat1

  • 1Institute of Physics, University of Szczecin, 70-451 Szczecin, Poland
  • 2Physics Department, Maritime University of Szczecin, 70-500 Szczecin, Poland

  • *konrad.czerski@usz.edu.pl
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Phys. Rev. C 109, L021601 – Published 12 February, 2024

DOI: https://doi.org/10.1103/PhysRevC.109.L021601

Abstract

Electron emission in the deuteron-deuteron reaction supporting existence of the single-particle threshold resonance in He4 has been observed for the first time. The measured electron energy spectrum and the electron-proton branching ratio agree very well with the assumed electron-positron pair creation decay of the 0+ resonance state to the ground state and the detailed Monte Carlo simulations of the experimental energy spectrum.

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Phys. Rev. C 109, L021601– Published 12 February, 2024
  • Received 5 June 2022
  • Revised 26 November 2023
  • Accepted 22 January 2024
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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