Pionization experiments in light nuclei
Abstract
The zero-energy antiproton absorption in light nuclei is considered. The ratios Rn/p of antiproton-neutron versus antiproton-proton capture rates in the lightest nuclei 2H, 3He and 4He are analyzed, both from the experimental results and from some selected theoretical models. These models are used as key input in determining the level shifts and widths of the lowest states. We establish the capture orbit in 3He to be states of angular momentum L=2. Several N-N optical potentials are used to compute the Rn/p values for several heavy nuclei and the results are found to be consistent with the data. However, the old chamber experiments studying pionization in Helium, are not consistent with models. Only the Paris potential is likely to succeed provided baryonia states predicted by this model are better understood.
Related
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BibTeX
@misc{wycech2026pionization,
title = {{Pionization experiments in light nuclei}},
author = {Slawomir Wycech and Guillaume Hupin and Jaume Carbonell},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.04991},
eprint = {2611.04991},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.04991},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Pionization experiments in light nuclei
AU - Slawomir Wycech
AU - Guillaume Hupin
AU - Jaume Carbonell
PY - 2026
DA - 2026/11/03
PB - arXiv
DO - 10.48550/arxiv.2611.04991
UR - https://arxiv.org/abs/2611.04991
AB - The zero-energy antiproton absorption in light nuclei is considered. The ratios R_n/p of antiproton-neutron versus antiproton-proton capture rates in the lightest nuclei ^2H, ^3He and ^4He are analyzed, both from the experimental results and from some selected theoretical models. These models are used as key input in determining the level shifts and widths of the lowest states. We establish the capture orbit in ^3He to be states of angular momentum L=2. Several N-N optical potentials are used to compute the R_n/p values for several heavy nuclei and the results are found to be consistent with the data. However, the old chamber experiments studying pionization in Helium, are not consistent with models. Only the Paris potential is likely to succeed provided baryonia states predicted by this model are better understood.
ER -