3 papers
hep-ph2026
Spin-orbit correlation of quarks within quarkonium
Tianyang Hu, Xianghui Cao, Siqi Xu +3
The spin-orbit correlation (SOC) provides a unique probe into the internal spin structure of hadrons. Defined via the parity-odd (P-odd) energy-momentum tensor (EMT), this observab…
hep-ph2025
Gravitational form factor of charmonium from shear stress
Tianyang Hu, Xianghui Cao, Siqi Xu +3
Based on our recent analysis of the hadronic matrix element of the stress-energy tensor in covariant light front dynamics, we extract the charmonium gravitational form factor $D(Q^…
hep-ph2024
Stress out of charmonia
Siqi Xu, Xianghui Cao, Tianyang Hu +3
We investigate the gravitational form factors of charmonium. Our method is based on a Hamiltonian formalism on the light front known as basis light-front quantization. The charmoni…