Abstract—
A new model for \(pd\) elastic large-angle scattering based on the intermediate dibaryon resonance production is proposed. Preliminary calculation results for the observables in \(pd\) backward scattering based on a simple model including one-nucleon exchange and the intermediate \(N + \Delta \) near-threshold state \({{\mathcal{D}}_{{12}}}(2150)\) are presented. A sizeable contribution of the \({{\mathcal{D}}_{{12}}}(2150)\) dibaryon to the \(pd\) elastic backward scattering is shown in the energy range \(0.3 < {{T}_{{\text{p}}}} < 1\) GeV, where the most severe discrepancies between the conventional theoretical approaches and experimental data occur.
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ACKNOWLEDGMENTS
The author would like to thank O.A. Rubtsova and V.N. Pomerantsev for helpful discussions.
Funding
The work was supported in part by the Russian Foundation for Basic Research (projects nos. 19-02-00011 and 19-02-00014), as well as the Theoretical Physics and Mathematics Advancement Foundation “BASIS”.
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Translated by G. Dedkov
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Platonova, M.N. Dibaryon Resonances and Three-Body Forces in Large-Angle pd Elastic Scattering at Intermediate Energies. Phys. Part. Nuclei 54, 405–411 (2023). https://doi.org/10.1134/S1063779623030280
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DOI: https://doi.org/10.1134/S1063779623030280