Speaker
Description
The factorization of Transverse Momentum Dependent (TMD)
observables plays a central role in modern studies on strong interactions, as it represents one of the most elegant and powerful approaches for the investigation of the 3D structure of hadrons. In particular, SIDIS cross sections cannot leave aside from a contribution associated with the nucleon structure and a contribution associated with the mechanism of hadronization, identified with a TMD Parton Distribution Function and a TMD Fragmentation Function, respectively. A reliable extraction of the
former requires a detailed knowledge of the latter. In this regard, it is crucial to supplement SIDIS studies with phenomenological analyses of processes in which a single TMD FF is accessed, as in single inclusive $e^+e^-$ annihilation (SIA). In this talk, I will review the factorization properties of this observable, in the case where the transverse momentum of the detected hadron is measured with respect to the thrust axis. I will show how to properly extend the standard TMD factorization to such observable, allowing for global phenomenological studies of TMD physics in which SIDIS and SIA data can be combined together.
