Speaker
Carlo Flore
(INFN Cagliari)
Description
We present an updated phenomenological analysis on transverse Single-Spin Asymmetries (SSAs) for inclusive hadron production in lepton-proton scattering. Adopting a transverse momentum dependent approach, we focus on the role of quasi-real (Weizsacker-Williams) photon exchange, showing its relative contribution to SSAs. Then, using the Sivers and the transversity distributions and the Collins function as extracted from fits to the SSAs for SIDIS and e+e- processes, we show new predictions and comparison with data. The data description shows a general improvement with respect to the previous leading order analysis. Predictions for unpolarized cross sections and SSAs for ongoing and future experiments are also given.
Primary author
Carlo Flore
(INFN Cagliari)
