The Bayesian reweighting procedure is applied for the first time to a TMD distribution, the quark Sivers function extracted from SIDIS data. By exploiting the recent published single spin asymmetry data for the inclusive jet production in p↑p collisions from the STAR collaboration at RHIC, we show how such a procedure allows to incorporate the information contained in the new data set, without the need of re-fitting, and to explore a much wider x region compared to SIDIS measurements. The reweighting method is also extended to the case of asymmetric errors, and the results show a significant improvement on the knowledge of the quark Sivers function.
Cite
@article{arxiv.2107.13311,
title = {Reweighting the quark Sivers function with STAR jet data},
author = {Carlo Flore and Maria Elena Boglione and Umberto D'Alesio and Josè Osvaldo Gonzalez-Hernandez and Francesco Murgia and Alexei Prokudin},
journal= {arXiv preprint arXiv:2107.13311},
year = {2021}
}
Comments
8 pages, 3 figures. Contribution to the XXVIII International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2021). Submission to SciPost Proceedings