Eur. Phys. J. A (2016) 52: 149
https://doi.org/10.1140/epja/i2016-16149-3

Review

Introduction to GPDs and TMDs

Deutsches Elektronen-Synchroton DESY, Notkestr. 85, 22607, Hamburg, Germany

^* e-mail: markus.diehl@desy.de

Received: 8 December 2015
Accepted: 14 December 2015
Published online: 1 June 2016

Abstract

Generalised parton distributions (GPDs) and transverse-momentum-dependent parton distributions (TMDs) describe complementary aspects of the three-dimensional structure of hadrons. We discuss their relation to each other and recall important theory results concerning their properties and their connection with physical observables.