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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2506.15962 |
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| _version_ | 1866913901176684544 |
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| author | Fang, Shen Lin, Shuo Shao, Ding Yu Zhou, Jian |
| author_facet | Fang, Shen Lin, Shuo Shao, Ding Yu Zhou, Jian |
| contents | We propose a novel strategy to systematically isolate the nucleon's intrinsic non-perturbative three-dimensional structure by employing 0-jettiness to suppress initial-state radiation in transverse momentum-dependent (TMD) observables. Applying this method to transverse single spin asymmetries (SSAs) in W+/- and Z0 boson production at RHIC, we demonstrate a substantial enhancement of the asymmetry signal (e.g., by 83% for Z0 SSA at $q_\perp$=5 GeV), enabling a more definitive test of the predicted sign change of the Sivers function -- a key prediction of TMD factorization. We further explore its applicability to spin-dependent measurements at the Electron-Ion Collider. Our analysis is formulated within a joint resummation framework that systematically resums large logarithms associated with both the veto scale and the gauge boson's transverse momentum. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_15962 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Nucleon Tomography with 0-jettiness Fang, Shen Lin, Shuo Shao, Ding Yu Zhou, Jian High Energy Physics - Phenomenology We propose a novel strategy to systematically isolate the nucleon's intrinsic non-perturbative three-dimensional structure by employing 0-jettiness to suppress initial-state radiation in transverse momentum-dependent (TMD) observables. Applying this method to transverse single spin asymmetries (SSAs) in W+/- and Z0 boson production at RHIC, we demonstrate a substantial enhancement of the asymmetry signal (e.g., by 83% for Z0 SSA at $q_\perp$=5 GeV), enabling a more definitive test of the predicted sign change of the Sivers function -- a key prediction of TMD factorization. We further explore its applicability to spin-dependent measurements at the Electron-Ion Collider. Our analysis is formulated within a joint resummation framework that systematically resums large logarithms associated with both the veto scale and the gauge boson's transverse momentum. |
| title | Nucleon Tomography with 0-jettiness |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2506.15962 |