9-14 September 2018
University of Ferrara
Europe/Rome timezone
23RD INTERNATIONAL SPIN SYMPOSIUM

Twist-2 transverse momentum distributions at NNLO in QCD

12 Sep 2018, 15:45
25m
A4 (Polo degli Adelardi - Via Adelardi, 33)

A4

Polo degli Adelardi - Via Adelardi, 33

Via Adelardi, 33
Parallel Sessions 3D Structure of the Nucleon: TMDs 3D Structure of the Nucleon: TMDs

Speaker

Mr Daniel Gutiérrez Reyes (Complutense University of Madrid)

Description

The factorization theorem for DY and semi-inclusive DIS holds for all leading twist transverse momentum distributions. However a QCD perturbative calculation shows several important characteristics of spin-dependent distributions. We consider all the different spin-dependent distributions which can be matched onto integrated twist-2 functions, focusing on the transversity and pretzelosity distributions. The pretzelosity case is specially relevant because, using a direct perturbative calculation at one loop, we obtain a null result which agrees with the experimental measurements. We show the complete set results of the matching at NLO and the results focusing on transversity and pretzelosity at NNLO.

Primary authors

Dr Alexey Vladimirov (Regensburg University) Mr Daniel Gutiérrez Reyes (Complutense University of Madrid) Ignazio Scimemi (Universidad Complutense Madrid)

Presentation Materials