Work

Quadrupole forces between quark and gluon subsystems inside higher-spin particles

Year: 2025

Type: article

Abstract: We generalize the mechanical interpretation of the forces between quark and gluon subsystems, previously studied for the nucleon, to arbitrary higher-spin particles. For spin-0 and spin- 1 / 2 particles, this force is characterized by the nonconserved c ¯ ( t ) form factor. However, such an interpretation has not yet been established for higher-spin particles due to the intricate structure of the nonconserved energy-momentum tensor (EMT) form factors. By performing a multipole expansion, we identify the physically meaningful combinations of the nonconserved covariant EMT form factors and provide them with a clear mechanical interpretation.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/r2t1-f4mc

Authors: June-Young Kim, Hyun-Chul Kim

Institutions: Centre National de la Recherche Scientifique, Inha University, Thomas Jefferson National Accelerator Facility, Centre de Physique Théorique, Korea Institute for Advanced Study

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: National Research Foundation of Korea, Ministry of Education, Science and Technology

Award: G7504715250