https://doi.org/10.1140/epja/s10050-021-00609-2
Regular Article - Theoretical Physics
Protonium annihilation densities in a unitary coupled channel model
1
Instituto Tecnológico da Aeronáautica, DCTA, 12228-900, Sao José dos Campos, Brazil
2
Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China
3
Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405, Orsay, France
b
jaume.carbonell@ijclab.in2p3.fr
Received:
2
August
2021
Accepted:
15
October
2021
Published online:
1
November
2021
We consider a unitary coupled channel model to describe the low energy proton-antiproton scattering and the lower Coulomb-like protonium states. The existence of deeper quasi-bound states of nuclear nature is found to be a consequence of the experimental data. The properties of these states as well as the protonium annihilation densities are described and the differences with respect to the optical models description are manifested.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021
