Dynamical study of $πN\to ππN$ reactions revisited
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| Format: | Preprint |
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2026
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| _version_ | 1866908785726980096 |
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| author | Kamano, H. Lee, T. -S. H. |
| author_facet | Kamano, H. Lee, T. -S. H. |
| contents | Using the Argonne National Laboratory-The University of Osaka (ANL-Osaka) DCC model of meson-nucleon reactions, we extend the study of Phys. Rev. C 79, 025206 (2009) and Phys. Rev. C 88, 045203 (2013) to predict the cross sections of the $πN \to ππN$ reactions. The model was constructed by fitting only the two-body reactions: $πN,γN \to πN, ηN, KΛ, KΣ$. Thus, the results for $πN \to ππN$ presented here are predictions of the ANL-Osaka DCC model, which serve to examine the extent to which the forthcoming data from J-PARC can be described. This study provides information for improving the extraction of nucleon resonances that have large decay widths to $ππN$ states. We present results for the total cross sections, invariant mass distributions, and angular distributions. We also identify the observables and energy regions where the higher mass nucleon resonances in the $S_{31}$, $P_{33}$, $D_{33}$, $F_{37}$, $D_{13}$, $D_{15}$, and $F_{15}$ partial waves can be most effectively investigated. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_17389 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Dynamical study of $πN\to ππN$ reactions revisited Kamano, H. Lee, T. -S. H. High Energy Physics - Phenomenology Nuclear Theory Using the Argonne National Laboratory-The University of Osaka (ANL-Osaka) DCC model of meson-nucleon reactions, we extend the study of Phys. Rev. C 79, 025206 (2009) and Phys. Rev. C 88, 045203 (2013) to predict the cross sections of the $πN \to ππN$ reactions. The model was constructed by fitting only the two-body reactions: $πN,γN \to πN, ηN, KΛ, KΣ$. Thus, the results for $πN \to ππN$ presented here are predictions of the ANL-Osaka DCC model, which serve to examine the extent to which the forthcoming data from J-PARC can be described. This study provides information for improving the extraction of nucleon resonances that have large decay widths to $ππN$ states. We present results for the total cross sections, invariant mass distributions, and angular distributions. We also identify the observables and energy regions where the higher mass nucleon resonances in the $S_{31}$, $P_{33}$, $D_{33}$, $F_{37}$, $D_{13}$, $D_{15}$, and $F_{15}$ partial waves can be most effectively investigated. |
| title | Dynamical study of $πN\to ππN$ reactions revisited |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2601.17389 |