3 papers
hep-ph2025
Unveiling the inner structure of the pion first excited state
Xiaobin Wang, Lei Chang
By capturing the characteristics of the Bethe-Salpeter amplitude for the pion excitation state, we construct an algebraic model to provide the overall features of the pion first ex…
hep-ph2021
Regarding the distribution of glue in the pion
Lei Chang, Craig D. Roberts
Understanding why the scale of emergent hadron mass is obvious in the proton but hidden in the pion may rest on mapping the distribution functions (DFs) of all partons within the p…
hep-ph2020
Pion Parton Distribution Function in Light-Front Holographic QCD
Lei Chang, Khépani Raya, Xiaobin Wang
The valence-quark distribution function of the pion has been of interest for decades; particularly, the profile it should adopt when (the large- behavior) is subject of…