Sar WorS 2023 - 3rd Sardinian Workshop on Spin

Theory of TMD factorization for thrust-dependent observables

6 Jun 2023, 10:20

30m

Speaker

Andrea Simonelli

Description

The study of TMDs can be extended to thrust-dependent observables, provided the role of the soft gluon radiation is properly considered.
In particular, the thrust distribution of $e^{+}{e}^{-}$ annihilations into one single hadron presents a rich kinematic structure, that leads to three different factorization theorems. Each of them is associated to a distinct physics framework of transverse momentum, with the central region of the phase space specifically related to a TMD Fragmentation Function. In this talk, I present the theoretical aspects of the factorization of this process in QCD, highlighting the subtle intertwining between thrust and rapidity and how this results in a novel factorized cross section, with no direct analogous in the processes usually exploited for TMDs related studies.

Presentation materials

Presentation SarWors3.pdf