We present a thorough phenomenological analysis of the experimental data from Belle Collaboration for the transverse Λ and Λˉ polarisation, measured in e+e− annihilation processes, for the case of inclusive (plus a jet) and associated production with a light charged hadron. This allows for the first ever extraction of the quark polarising fragmentation function for a Λ hyperon, a transverse momentum dependent distribution giving the probability that an unpolarised quark fragments into a transversely polarised spin-1/2 hadron.
@article{arxiv.2003.01128,
title = {First extraction of the $\Lambda$ polarising fragmentation function from Belle $e^+e^-$ data},
author = {Umberto D'Alesio and Francesco Murgia and Marco Zaccheddu},
journal= {arXiv preprint arXiv:2003.01128},
year = {2020}
}