English

Global analysis of Sivers and Collins asymmetries within the TMD factorization

High Energy Physics - Phenomenology 2024-12-25 v1

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.

Keywords

Cite

@article{arxiv.2412.18324,
  title  = {Global analysis of Sivers and Collins asymmetries within the TMD factorization},
  author = {Chunhua Zeng and Hongxin Dong and Tianbo Liue and Peng Sun and Yuxiang Zhao},
  journal= {arXiv preprint arXiv:2412.18324},
  year   = {2024}
}