Determining the Meson Cloud Contribution of Nucleon Electromagnetic Form Factor Using Dispersion Relation

Autor:	Atthaphan, Ek-ong, Kaewsnod, Attaphon, Xu, Kai, Aung, Moh Moh, Sreethawong, Warintorn, Limphirat, Ayut, Yan, Yupeng
Rok vydání:	2024
Předmět:	High Energy Physics - Phenomenology Nuclear Theory
Druh dokumentu:	Working Paper
Popis:	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. Comment: 6 pages, 9 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2409.17492 Zobrazit plný text záznamu View this record from Arxiv