Spin-orbit correlation and spatial distributions for spin-0 hadrons
The spin-orbit correlation in spin-0 hadrons can be investigated through the kinetic energy-momentum tensor form factor 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 F˜...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-05-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269325001947 |
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| Summary: | The spin-orbit correlation in spin-0 hadrons can be investigated through the kinetic energy-momentum tensor form factor 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 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. |
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| ISSN: | 0370-2693 |