RT Journal Article
T1 Imaging the charge distributions of flavor-symmetric and -asymmetric mesons
A1 Xu, Yinzhen
A1 Bashir, Adnan
A1 Raya, Khépani
A1 Rodríguez Quintero, José
A1 Segovia González, Jorge
AB We investigate the internal structure of a comprehensive set of pseudoscalar and vector mesons, including both flavor-symmetric and flavor-asymmetric systems, by reconstructing their charge distributions from electromagnetic form factors. To achieve this, we employ a Maximum Entropy Method optimized for charge distributions, utilizing previously published form factor data obtained within the Dyson–Schwingers and Bethe–Salpeter equations framework. Furthermore, we calculate the average distance between the valence quark and antiquark that constitute the meson, interpreting it as an estimate for both the meson’s spatial size and the typical range of quark motion. Our results reveal that this distance for the lightest quarkonia is approximately five times larger than that for the heaviest. Moreover, due to spin effects, vector mesons exhibit sizes that are 5–15% larger than their pseudoscalar counterparts.
PB Elsevier
SN 0370-2693
SN 1873-2445 (electrónico)
YR 2025
FD 2025
LK https://hdl.handle.net/10272/27362
UL https://hdl.handle.net/10272/27362
LA eng
NO Xu, Y.-Z., Bashir, A., Raya, K., Rodríguez-Quintero, J., & Segovia, J. (2025). Imaging the charge distributions of flavor-symmetric and -asymmetric mesons. Physics Letters B, 869, 139864. https://doi.org/10.1016/j.physletb.2025.139864
NO This work has been partially funded by Ministerio Español de Ciencia e Innovación under grant Nos. PID2019-107844GB-C22 and PID2022- 140440NB-C22; Junta de Andalucía under contract Nos. Operativo FEDER Andalucía 2014–2020 UHU-1264517, P18-FR-5057 and also PAIDI FQM-370. The authors acknowledge, too, the use of the computer facilities of C3UPO at the Universidad Pablo de Olavide, de Sevilla.
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026