The Roper Resonance $N^*(1440)$ in Nucleon-Nucleon Collisions and the Issue of Dibaryons
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866915369685352448 |
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| author | Clement, Heinz |
| author_facet | Clement, Heinz |
| contents | In many reactions leading to excitations of the nucleon the Roper resonance $N^*(1440)$ can be sensed only by complex partial-wave analyses. In nucleon-nucleon collisions the isoscalar single-pion production as well as specific two-pion production channels present the Roper excitation free of competing resonance processes at a mass of 1370 MeV and a width of 150 MeV. A detailed analysis points to the formation of $N^*(1440)N$ dibaryonic systems during the nucleon-nucleon collision process similar to what is known from the $Δ(1232)N$ threshold. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2507_01937 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The Roper Resonance $N^*(1440)$ in Nucleon-Nucleon Collisions and the Issue of Dibaryons Clement, Heinz High Energy Physics - Experiment Nuclear Experiment Nuclear Theory In many reactions leading to excitations of the nucleon the Roper resonance $N^*(1440)$ can be sensed only by complex partial-wave analyses. In nucleon-nucleon collisions the isoscalar single-pion production as well as specific two-pion production channels present the Roper excitation free of competing resonance processes at a mass of 1370 MeV and a width of 150 MeV. A detailed analysis points to the formation of $N^*(1440)N$ dibaryonic systems during the nucleon-nucleon collision process similar to what is known from the $Δ(1232)N$ threshold. |
| title | The Roper Resonance $N^*(1440)$ in Nucleon-Nucleon Collisions and the Issue of Dibaryons |
| topic | High Energy Physics - Experiment Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2507.01937 |