Quadrupole forces between quark/gluon subsystems inside higher-spin particles
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866914013311401984 |
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| author | Kim, June-Young Kim, Hyun-Chul |
| author_facet | Kim, June-Young Kim, Hyun-Chul |
| contents | 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 non-conserved $\bar{c}(t)$ form factor. However, such an interpretation has not yet been established for higher-spin particles due to the intricate structure of the non-conserved energy-momentum tensor (EMT) form factors. By performing a multipole expansion, we identify the physically meaningful combinations of the non-conserved covariant EMT form factors and provide them with a clear mechanical interpretation. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2508_21319 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quadrupole forces between quark/gluon subsystems inside higher-spin particles Kim, June-Young Kim, Hyun-Chul High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice 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 non-conserved $\bar{c}(t)$ form factor. However, such an interpretation has not yet been established for higher-spin particles due to the intricate structure of the non-conserved energy-momentum tensor (EMT) form factors. By performing a multipole expansion, we identify the physically meaningful combinations of the non-conserved covariant EMT form factors and provide them with a clear mechanical interpretation. |
| title | Quadrupole forces between quark/gluon subsystems inside higher-spin particles |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2508.21319 |