Study of $N(1520)$ and $N(1535)$ structures via $γ^*p\to N^*$ transitions
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2022
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| _version_ | 1866910887074332672 |
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| author | Kaewsnod, A. Xu, K. Zhao, Z. Liu, X. Y. Srisuphaphon, S. Limphirat, A. Yan, Y. |
| author_facet | Kaewsnod, A. Xu, K. Zhao, Z. Liu, X. Y. Srisuphaphon, S. Limphirat, A. Yan, Y. |
| contents | The helicity amplitudes of the $N(1520)$ and $N(1535)$ resonances in the $γ^*p\to N^*$ electromagnetic transition are studied in the constituent quark model using the impulse approximation, with the proton and resonances assumed to be in three-quark configurations. The comparison of theoretical results and experimental data on the helicity amplitudes $A_{1/2}$, $A_{3/2}$, and $S_{1/2}$ indicates that the $N(1520)$ and $N(1535)$ resonances are primarily composed of three-quark $L=1$ states but may contain additional components. However, it is improbable that contributions from meson clouds will be dominant at low $Q^2$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2204_09528 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Study of $N(1520)$ and $N(1535)$ structures via $γ^*p\to N^*$ transitions Kaewsnod, A. Xu, K. Zhao, Z. Liu, X. Y. Srisuphaphon, S. Limphirat, A. Yan, Y. High Energy Physics - Phenomenology Nuclear Theory The helicity amplitudes of the $N(1520)$ and $N(1535)$ resonances in the $γ^*p\to N^*$ electromagnetic transition are studied in the constituent quark model using the impulse approximation, with the proton and resonances assumed to be in three-quark configurations. The comparison of theoretical results and experimental data on the helicity amplitudes $A_{1/2}$, $A_{3/2}$, and $S_{1/2}$ indicates that the $N(1520)$ and $N(1535)$ resonances are primarily composed of three-quark $L=1$ states but may contain additional components. However, it is improbable that contributions from meson clouds will be dominant at low $Q^2$. |
| title | Study of $N(1520)$ and $N(1535)$ structures via $γ^*p\to N^*$ transitions |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2204.09528 |