Factorizing the cross section for single hadron production in $e^+e^-$ annihilations, differential in $z_h$, $P_T$ and thrust, is a highly non trivial task. We have devised a factorization scheme that allows us to recast the $e^+e^- \to hX$ cross section in the convolution of a calculable hard coefficient and a universal Transverse Momentum Dependent (TMD) Fragmentation Function (FF). The predictions obtained from our NLO-LL 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.
Cited by 2
Authors / Affiliations: mappings to Contributors and OrganizationsSee all Organizations.
- 1 2 Mariaelena Boglione,
- 1 2 Josè Osvaldo Gonzalez-Hernandez,
- 1 2 Andrea Simonelli
- 1 Istituto Nazionale di Fisica Nucleare / National Institute for Nuclear Physics [INFN]
- 2 Università degli Studi di Torino / University of Turin [UNITO]
- Horizon 2020 (through Organization: European Commission [EC])