First observation of electron emission from the DD threshold resonance

Author:

K. Czerski, R. Dubey, M. Kaczmarski, A. Kowalska, N. Targosz-Sleczka, G. Das Haridas, M. Valat

Keyword:

Nuclear Experiment, Nuclear Experiment (nucl-ex)

journal:

date:

2023-05-25 16:00:00

Abstract

Electron emission in the deuteron-deuteron reaction supporting existence of the single-particle threshold resonance in 4 He 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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