Physics

The electromagnetic form factors of heavy-light pseudo-scalar and vector mesons

Y. Xu

This groundbreaking research by Yin-Zhen Xu delves into the electromagnetic form factors of heavy-light mesons. For the first time, the study reveals intriguing insights into the charge radius of vector mesons compared to pseudo-scalar mesons, highlighting the fascinating role of flavor symmetry breaking in these systems.... show more

Abstract

We systematically investigate the electromagnetic form factors of heavy-light pseudo-scalar and vector mesons within the Dyson-Schwinger/Bethe-Salpeter equations framework for the first time. It is found that the charge radius of vector meson is larger than that of its pseudo-scalar counterpart. In heavy-light systems, the flavor symmetry breaking will lead to a splitting of the form factor of different quark, and the distribution range of lighter and heavier quark gradually expands and contracts, respectively. The competition between them together generates the electromagnetic form factors of meson. Our results can be compared with other theoretical calculations and future experimental data.

Publisher

JHEP

Published On

Jul 12, 2024

Authors

Yin-Zhen Xu

DOI

https://doi.org/10.1007/JHEP07(2024)118

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