Spin-orbit correlation and spatial distributions for spin-0 hadrons
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arXiv
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866915222571188224 |
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| author | Lorcé, Cédric Song, Qin-Tao |
| author_facet | Lorcé, Cédric Song, Qin-Tao |
| contents | The spin-orbit correlation in spin-0 hadrons can be investigated through the kinetic energy-momentum tensor form factor $\tilde F^q(t)$. We observe that the latter is also related to a torque about the radial direction, which we interpret as a chiral stress. If we neglect the quark mass contribution, then $\tilde F^q(t)$ is simply proportional to the electromagnetic form factor for spin-0 hadrons, and the spin-orbit correlation is equal to minus half of the valence quark number. Given the extensive studies on the electromagnetic form factor for spin-0 hadrons such as pions, kaons, and the $α$ particle, we present the spatial distributions of chiral stress and kinetic spin-orbit correlation based on current parametrizations of the pion electromagnetic form factor. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_05092 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spin-orbit correlation and spatial distributions for spin-0 hadrons Lorcé, Cédric Song, Qin-Tao High Energy Physics - Phenomenology High Energy Physics - Lattice Nuclear Experiment Nuclear Theory The spin-orbit correlation in spin-0 hadrons can be investigated through the kinetic energy-momentum tensor form factor $\tilde F^q(t)$. We observe that the latter is also related to a torque about the radial direction, which we interpret as a chiral stress. If we neglect the quark mass contribution, then $\tilde F^q(t)$ is simply proportional to the electromagnetic form factor for spin-0 hadrons, and the spin-orbit correlation is equal to minus half of the valence quark number. Given the extensive studies on the electromagnetic form factor for spin-0 hadrons such as pions, kaons, and the $α$ particle, we present the spatial distributions of chiral stress and kinetic spin-orbit correlation based on current parametrizations of the pion electromagnetic form factor. |
| title | Spin-orbit correlation and spatial distributions for spin-0 hadrons |
| topic | High Energy Physics - Phenomenology High Energy Physics - Lattice Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2501.05092 |