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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2403.12795 |
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| _version_ | 1866909142373892096 |
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| author | Yang, Ke Liu, Tianbo Sun, Peng Zhao, Yuxiang Ma, Bo-Qiang |
| author_facet | Yang, Ke Liu, Tianbo Sun, Peng Zhao, Yuxiang Ma, Bo-Qiang |
| contents | We present a global analysis of the trans-helicity worm-gear distribution function, $g_{1T}^\perp$, by fitting the longitudinal-transverse double spin asymmetry data of the semi-inclusive deep inelastic scattering. The analysis is performed within the framework of transverse momentum dependent factorization and evolution. It is found that the $u$-quark favors a positive distribution and the $d$-quark favors a negative distribution, which is consistent with previous model calculations and phenomenological extractions. Based on the fit to existing world data, we also study the impact of the proposed electron-ion collider in China and conclude that it can significantly improve the precision of the worm-gear distribution function and hence enhance our understanding of nucleon spin structures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_12795 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Extraction of trans-helicity worm-gear distributions and opportunities at the Electron-Ion Collider in China Yang, Ke Liu, Tianbo Sun, Peng Zhao, Yuxiang Ma, Bo-Qiang High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Theory We present a global analysis of the trans-helicity worm-gear distribution function, $g_{1T}^\perp$, by fitting the longitudinal-transverse double spin asymmetry data of the semi-inclusive deep inelastic scattering. The analysis is performed within the framework of transverse momentum dependent factorization and evolution. It is found that the $u$-quark favors a positive distribution and the $d$-quark favors a negative distribution, which is consistent with previous model calculations and phenomenological extractions. Based on the fit to existing world data, we also study the impact of the proposed electron-ion collider in China and conclude that it can significantly improve the precision of the worm-gear distribution function and hence enhance our understanding of nucleon spin structures. |
| title | Extraction of trans-helicity worm-gear distributions and opportunities at the Electron-Ion Collider in China |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2403.12795 |