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| Format: | Preprint |
| Published: |
2025
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| Online Access: | https://arxiv.org/abs/2509.11290 |
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| _version_ | 1866909786873790464 |
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| author | Zou, Bing-Song |
| author_facet | Zou, Bing-Song |
| contents | The Roper resonance $N^*(1440)$ was discovered by David Roper in 1964 through sophisticated partial-wave analyses of $πN$ scattering data. However the first direct observation of the Roper resonance peak in the $πN$ invariant mass spectrum was only realized 40 years later from the charmonium decay $J/ψ\to\bar pnπ^+ +c.c.$ at Beijing Electron-Positron Collider. The further observations of the Roper resonance production from various charmonium decays helped to reveal its multiquark nature with large $σN$ component. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_11290 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Roper resonance $N^*(1440)$ from charmonium decays Zou, Bing-Song High Energy Physics - Phenomenology The Roper resonance $N^*(1440)$ was discovered by David Roper in 1964 through sophisticated partial-wave analyses of $πN$ scattering data. However the first direct observation of the Roper resonance peak in the $πN$ invariant mass spectrum was only realized 40 years later from the charmonium decay $J/ψ\to\bar pnπ^+ +c.c.$ at Beijing Electron-Positron Collider. The further observations of the Roper resonance production from various charmonium decays helped to reveal its multiquark nature with large $σN$ component. |
| title | Roper resonance $N^*(1440)$ from charmonium decays |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2509.11290 |