Year: 2026
Type: preprint
Abstract: Understanding the internal structure of the pion-particularly the energy-momentum distributions of quarks and gluons and the internal mechanical properties encoded in its gravitational form factors-is a fundamental challenge in quantum chromodynamics (QCD). In this work, we study the gravitational form factors using light-front QCD (LFQCD), combined with the holographic QCD. Our main innovation is the introduction of an effective light-front wave function, with its five-dimensional component obtained from holographic QCD, which is then employed, within the light-front QCD framework, to calculate the pion's gravitational form factors $A(Q^2)$ and $D(Q^2)$ as well as its radius. Our computed pion gravitational form factors show agreement with lattice QCD results, providing nontrivial support for the viability of our phenomenological model.
Source: arXiv (Cornell University)
Authors: Deng, Jiali, Wang, Xiaolong, Zhou, Yang, Hou, Defu
Institution: Central China Normal University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Award: G2652705316
OpenAlex ID: W7167828220