Speaker
Michael Fucilla
Description
We present a framework that combines the higher-twist formalism for exclusive processes in the $s$-channel with the semi-classical effective theory describing small-$x$ dynamics in the $t$-channel. This framework is applied to the exclusive production of a transversely polarized light vector meson—a process that starts at next-to-leading power and for which standard collinear factorization breaks down. Within this approach, we perform a comprehensive analysis of the full spin density matrix of the exclusive $\rho$-meson leptoproduction, focusing on the kinematic regime relevant for the Electron-Ion Collider (EIC).
Authors
Alessandro Papa
(Istituto Nazionale di Fisica Nucleare)
Lech Szymanowski
(Ecole Polytechnique, CphT/SINS Warsaw)
Luigi Delle Rose
Michael Fucilla
Renaud Boussarie
(Ecole Polytechnique, CPHT)
Prof.
Samuel Wallon
(Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405, Orsay, France)
