Factorizing the cross section for single hadron production in e+e− annihilations, differential in zh, PT and thrust, is a highly non trivial task. We have devised a factorization scheme that allows us to recast the e+e−→hX cross section in the convolution of a perturbatively calculable coefficient and a universal Transverse Momentum Dependent (TMD) Fragmentation Function (FF). The predictions obtained from our NLO-NLL perturbative computation, together with a simple ansatz to model the non-perturbative part of the TMD, are applied to the experimental measurements of the BELLE Collaboration for the phenomenological extraction of this process independent TMD FF.
@article{arxiv.2108.04182,
title = {Phenomenological extraction of a universal TMD fragmentation function from single hadron production in $e^+ e^-$ annihilations},
author = {M. Boglione and J. O. Gonzalez-Hernandez and A. Simonelli},
journal= {arXiv preprint arXiv:2108.04182},
year = {2021}
}
Comments
To appear in the Proceedings of the XXVIII International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2021)