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arXiv · 2609.16883

Exploring nucleon spin by Drell-Yan process

Wen-Chen Chang
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Abstract

Contributions of parton's orbital motion to the nucleon spin are encoded in the transverse-momentum dependent distributions (TMDs) and generalized parton distributions (GPDs). Currently these distributions are accessed through the lepton-induced processes such as semi-inclusive deep-inelastic scattering (SIDIS) and deeply virtual Compton Scattering (DVCS). The (un)polarized Drell-Yan process with hadron beams provides a unique and complementary probe, enabling critical tests of the universality properties of TMDs and GPDs in the space-like and time-like approaches. This talk reviews recent results of TMDs obtained from the Drell-Yan measurements and discusses future prospects for accessing nucleon GPDs through measurements of the exclusive pion-induced Drell-Yan process at J-PARC.

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Wen-Chen Chang. 2026-09-15. Exploring nucleon spin by Drell-Yan process. https://doi.org/10.22323/1.517.0025

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