We present the complete structure of the azimuthal dependences and polarization observables for two-hadron production in e+e− annihilation processes within a transverse momentum dependent (TMD) approach adopting the helicity formalism. The leading-twist TMD fragmentation functions (TMD-FFs) for spin-1/2 hadrons are fully accounted for. The role of the polarizing FF, together with its extraction from Belle data for the transverse polarization of Λ's, are discussed as well. Finally, predictions for SIDIS processes at EIC are presented.
@article{arxiv.2202.10056,
title = {General Helicity Formalism for Two-hadron Production in $e^+e^-$ Collisions and the $\Lambda$ Polarizing Fragmentation Function},
author = {Umberto D'Alesio and Francesco Murgia and Marco Zaccheddu},
journal= {arXiv preprint arXiv:2202.10056},
year = {2023}
}
Comments
5 pages, 3 figures (8 plots), presented by U. D'Alesio at the 24th International Spin Symposium (SPIN2021), 18-22 October 2021, Matsue, Japan