Speaker
Hongxin Dong
(NNU)
Description
We will present a global analysis of Sivers function, transversity distribution functions and Collins fragmentation functions within TMD factorization. This analysis encompasses the latest data sets from semi-inclusive deep inelastic scattering, Drell-Yan, and $W^{\pm}/Z$-boson production as recently reported by the COMPASS and STAR Collaborations. Upon integrating this new data into our fitting, the accuracy of the $d$ and $\bar{d}$ quark extraction for both transversity and Sivers distribution is notably improved, as well as the tensor charge. Alongside this enhancement, we observed a positive transversity distribution for the $\bar{d}$ quark for the first time .
Primary authors
Mr
Chunhua Zeng
(IMP)
Hongxin Dong
(NNU)
Tianbo Liu
(Shandong University)
Yuxiang Zhao
(Institute of Modern Physics, Chinese Academy of Sciences)
peng sun
(IMP)
