Speaker
Andrea Simonelli
(University of Torino and INFN Torino)
Description
The factorization of the cross section for single hadron production in $e^+e^-$ annihilations is highly non trivial when the transverse momentum of the outgoing hadron with respect to the thrust axis is taken into account. In this talk, I will present a scheme that allows to factorize this cross section as a convolution between a computable hard coefficient and a TMD fragmentation function. The cross section will be presented at NLO and NLL accuracy. This scheme also relates the TMD parton densities defined in 1-hadron and in 2-hadron processes, restoring the possibility to perform global phenomenological studies of TMD physics.
Primary author
Andrea Simonelli
(University of Torino and INFN Torino)
Co-author
Mariaelena Boglione
(University of Turin)
