RT Journal Article
T1 Light-front transverse nucleon charge and magnetization densities
A1 Xu, Zhen-Ni
A1 Yao, Zhao-Quian
A1 Cheng, Peng
A1 Roberts, Craig D.
A1 Rodríguez Quintero, José
A1 Segovia González, Jorge
AB Nucleon elastic electromagnetic form factors obtained using both the three-body and quark+fully interacting-diquark pictures of nucleon structure are employed to calculate an array of light-front transverse densities for the proton and neutron and their dressed valence-quark constituents, viz. flavor separations of the proton and neutron results. These two complementary descriptions of nucleon structure deliver mutually compatible predictions, which match expectations based on modern parametrizations of available data, where such are available. Among other things, it is found that transverse-plane valence 𝑢- and 𝑑-quark Dirac radii are practically indistinguishable; but regarding kindred Pauli radii, the 𝑑 quark value is roughly 10% greater than that of the 𝑢-quark. Moreover, magnetically, the valence 𝑑 quark is far more active than the valence 𝑢 quark, probably because it has much greater orbital angular momentum. Both pictures of nucleon structure agree in predicting that, in a polarized nucleon, the transverse-plane charge densities are no longer rotationally invariant. Instead, for a + ^x polarized nucleon, positive charge is displaced in the + ^𝑦  direction, with the opposite effect for negative charge.
PB American Physical Society
SN 2470-0010
SN 2470-0029 (electrónico)
YR 2026
FD 2026
LK https://hdl.handle.net/10272/28484
UL https://hdl.handle.net/10272/28484
LA eng
NO Xu, Z.-N., Yao, Z.-Q., Cheng, P., Roberts, C. D., Rodríguez-Quintero, J., & Segovia, J. (2026). Light-front transverse nucleon charge and magnetization densities. Physical Review D, 113(5). https://doi.org/10.1103/jzh2-swwb
NO Work supported by: National Natural Science Foundation of China, Grant No. 12135007; Natural Science Foundation of Anhui Province (Grant No. 2408085QA028); Helmholtz-Zentrum Dresden-Rossendorf, under the High Potential Programme; Ministerio Español de Ciencia, Innovación yUniversidades (MICINN) Grant No. PID2022- 140440NB-C22; and Junta de Andalucía Contract No. PAIDI FQM-370 and PCI+D+i under the title: “Tecnologías avanzadas para la exploración del universo y sus componentes” (Code AST22-0001).
DS Repositorio Institucional de la Universidad de Huelva
RD 13 jul 2026