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arXiv · 2412.18324

Global analysis of Sivers and Collins asymmetries within the TMD factorization

Chunhua Zeng·Hongxin Dong·Tianbo Liue·Peng Sun·Yuxiang Zhao
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Abstract

We present a global analysis of Sivers functions, transversity distribution functions, and Collins fragmentation functions within the transverse momentum dependent factorization. This analysis encompasses the latest data from semi-inclusive deep inelastic scattering, Drell-Yan, and W/Z-boson production processes as recently reported by the COMPASS and STAR Collaborations. Upon integrating the new data into our fitting, the precision of the extracted d and dbar quark Sivers and transversity distributions, as well as the tensor charge, is notably improved.

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Chunhua Zeng, Hongxin Dong, Tianbo Liue, Peng Sun, Yuxiang Zhao. 2024-12-24. Global analysis of Sivers and Collins asymmetries within the TMD factorization. https://arxiv.org/abs/2412.18324

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