Accessing gluon polarization with high-$P_T$ hadrons in SIDIS
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2022
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| _version_ | 1866915971180003328 |
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| author | Whitehill, R. M. Zhou, Yiyu Sato, N. Melnitchouk, W. |
| author_facet | Whitehill, R. M. Zhou, Yiyu Sato, N. Melnitchouk, W. |
| contents | A recent global QCD analysis of jet production and other polarized scattering data has found the presence of negative solutions for the gluon helicity distribution in the proton, $Δg$, along with the traditional $Δg > 0$ solutions. We consider polarized semi-inclusive deep-inelastic scattering for hadrons produced with large transverse momentum as a means of constraining the dependence of $Δg$ on the parton momentum fraction, $x$. Focusing on the double longitudinal spin asymmetry, we identify the kinematics relevant for future experiments at Jefferson Lab and the Electron-Ion Collider which are particularly sensitive to the polarized gluon channel and could discriminate between the different $Δg$ behaviors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2210_12295 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Accessing gluon polarization with high-$P_T$ hadrons in SIDIS Whitehill, R. M. Zhou, Yiyu Sato, N. Melnitchouk, W. High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Theory A recent global QCD analysis of jet production and other polarized scattering data has found the presence of negative solutions for the gluon helicity distribution in the proton, $Δg$, along with the traditional $Δg > 0$ solutions. We consider polarized semi-inclusive deep-inelastic scattering for hadrons produced with large transverse momentum as a means of constraining the dependence of $Δg$ on the parton momentum fraction, $x$. Focusing on the double longitudinal spin asymmetry, we identify the kinematics relevant for future experiments at Jefferson Lab and the Electron-Ion Collider which are particularly sensitive to the polarized gluon channel and could discriminate between the different $Δg$ behaviors. |
| title | Accessing gluon polarization with high-$P_T$ hadrons in SIDIS |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2210.12295 |