Determining the Meson Cloud Contribution of Nucleon Electromagnetic Form Factor Using Dispersion Relation
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866916411625963520 |
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| author | Atthaphan, Ek-ong Kaewsnod, Attaphon Xu, Kai Aung, Moh Moh Sreethawong, Warintorn Limphirat, Ayut Yan, Yupeng |
| author_facet | Atthaphan, Ek-ong Kaewsnod, Attaphon Xu, Kai Aung, Moh Moh Sreethawong, Warintorn Limphirat, Ayut Yan, Yupeng |
| contents | We explore the meson cloud contribution to nucleon electromagnetic form factors in dispersion relation approach. In our calculations, experimental data on transition amplitudes for pion-nucleon scatterings are taken directly as inputs, with the assumption that the photon-pion interaction dominates over other meson-photon couplings. Combining with the quark core contribution evaluated in quark model, the proton electromagnetic form factors are well reproduced in the work. The resulting mean-square charge radius of the proton agrees well with experimental data, and the quark core radius is reasonable. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_17492 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Determining the Meson Cloud Contribution of Nucleon Electromagnetic Form Factor Using Dispersion Relation Atthaphan, Ek-ong Kaewsnod, Attaphon Xu, Kai Aung, Moh Moh Sreethawong, Warintorn Limphirat, Ayut Yan, Yupeng High Energy Physics - Phenomenology Nuclear Theory We explore the meson cloud contribution to nucleon electromagnetic form factors in dispersion relation approach. In our calculations, experimental data on transition amplitudes for pion-nucleon scatterings are taken directly as inputs, with the assumption that the photon-pion interaction dominates over other meson-photon couplings. Combining with the quark core contribution evaluated in quark model, the proton electromagnetic form factors are well reproduced in the work. The resulting mean-square charge radius of the proton agrees well with experimental data, and the quark core radius is reasonable. |
| title | Determining the Meson Cloud Contribution of Nucleon Electromagnetic Form Factor Using Dispersion Relation |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2409.17492 |