8 papers
Inverse Problem Approach for Non-Perturbative QCD: Applications
Yong Zheng, Ao-Sheng Xiong, Fu-Sheng Yu +1
In arXiv:2211.13753 we proposed a novel theoretical approach for non-perturbative QCD, named the inverse problem approach. It extracts non-perturbative quantities by solving a disp…
Semileptonic Decay of from QCD Light-cone Sum Rules
Ke-Sheng Huang, Ao-Sheng Xiong, Hua-Yu Jiang +1
We investigate the complete set of vector and axial-vector form factors for the charged-current transition using QCD light-cone sum rules (LCSRs) based on the…
Revisiting Quark Confinement in the Proton through the Force on Quarks
Ji-Xin Yu, Ao-Sheng Xiong, Ji Xu +2
Quark confinement, the fact that colored quarks are permanently bound inside color-neutral hadrons and have never been observed as isolated particles, remains one of the central is…
Accessing the HQET B-Meson Shape Function from a LaMET Quasi-Shape Function
Ao-Sheng Xiong, Jun Ding, Ji Xu +2
The shape function and the light-cone distribution amplitude of heavy meson jointly characterize the nonperturbative structure of the heavy meson on the light-cone, with the former…
Approaches to the Inverse Fourier Transformation with Limited and Discrete Data
Yu-Fei Ling, Min-Huan Chu, Jian Liang +3
We investigate several approaches to address the inverse problem that arises in the limited inverse Fourier transform (L-IDFT) of quasi-distributions. The methods explored include…
An analysis of nuclear parton distribution function based on relative entropy
Shu-Man Hu, Ao-Sheng Xiong, Ji Xu +2
In this work, we propose a method to quantify the difference between nuclear parton distribution functions in different nuclei and parton distribution functions in free nucleons us…
Ill-Posedness in Limited Discrete Fourier Inversion and Regularization for Quasi Distributions in LaMET
Ao-Sheng Xiong, Jun Hua, Ting Wei +3
We systematically investigated the limited inverse discrete Fourier transform of the quasi distributions from the perspective of inverse problem theory. This transformation satisfi…
Inverse Problem Approach for Non-Perturbative QCD: Theoretical Foundation
Ao-Sheng Xiong, Fu-Sheng Yu, Yong Zheng +1
A novel theoretical framework, the inverse problem approach, is proposed to calculate non-perturbative quantities in quantum chromodynamics (QCD). Based on the dispersion relation…