Speaker
Description
In this talk, we study the azimuthal anisotropy of the back-to-back lepton-jet production in polarized lepton-proton collisions.
In particular, we provide the theoretical origins for the dependencies on $\phi_q - \phi_J$ from a factorization formalism derived within the soft-collinear effective theory (SCET) framework.
We further present numerical results for the polarized azimuthal anisotropies associated with the Sivers and worm-gear functions with Electron-Ion Collider kinematics.
Our findings reveal that the presence of the observed jet introduces nontrivial azimuthal dependence into the soft functions, generating higher-harmonic patterns that can discernibly alter the conventional asymmetries and thus must be carefully accounted for in any precision extraction of polarized TMD PDFs.
