The nucleon spin decomposition: News and experimental implications
1 IPNO, Université Paris-Sud, CNRS/IN2P3, 91406 Orsay, France
2 IFPA, AGO Department, Université de Liège, Sart-Tilman, 4000 Liège, Belgium
Published online: 9 June 2014
Recently, many nucleon spin decompositions have been proposed in the literature, creating a lot of confusion. This revived in particular old controversies regarding the measurability of theoretically defined quantities. We propose a brief overview of the different decompositions, discuss the sufficient requirements for measurability and stress the experimental implications.
© Owned by the authors, published by EDP Sciences, 2014
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