Speaker
Description
In this talk, we present preliminary results about the path to a global Bayesian reweighting of TMD functions. Within an effective model as the Generalized Parton Model, and by adopting the Sivers, transversity and Collins functions as extracted from SIDIS and $e^+ e^-$ azimuthal asymmetries, we plan a simultaneous reweighting of these TMDs using data on Single-Spin Asymmetries measured at RHIC. The strategy for generalizing Bayesian reweighting to multiple fits is illustrated, together with compression techniques, that will allow us to improve the efficiency of the whole procedure. We expect this work to give some hints about TMD universality, the role of positivity bounds and to quantitatively estimate factorization breaking effects in inclusive processes.
