Nucleon charge and magnetisation distributions: Flavour separation and zeroes
A symmetry-preserving truncation of the quantum field equations describing hadron properties is used to deliver parameter-free predictions for all nucleon elastic electromagnetic form factors and their flavour separation to large values of momentum transfer, Q 2 . The proton electric form factor, G E p , possesses a zero, whereas that of the neutron, G E n , does not. The difference owes to the behaviour of the Pauli form factor of the proton’s singly-represented valence d -quark. Consequently, G E n > G E p on a material large- Q 2 domain. These predictions can be tested in modern experiments.
Authors
- Craig D. Roberts (ORCID: https://orcid.org/0000-0002-2937-1361)
- Zhu-Fang Cui (ORCID: https://orcid.org/0000-0003-3890-0242)
- Daniele Binosi (ORCID: https://orcid.org/0000-0003-1742-4689)
- Zhao-Qian Yao (ORCID: https://orcid.org/0000-0002-9621-6994)
Institutions
- European Centre for Theoretical Studies in Nuclear Physics and Related Areas (IT)
- Nanjing University (CN)
Publication Details
- Journal
- Fundamental Research
- Published
- 2024-11-01
- DOI
- https://doi.org/10.1016/j.fmre.2024.11.005
- Citations
- 4
- Primary Topic
- Quantum Chromodynamics and Particle Interactions
- Type
- article
- Field-Weighted Citation Impact
- 2.64
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Jiangsu Province
- Horizon 2020 Framework Programme