The nucleon spin decomposition: news and experimental implications
classification
✦ hep-ph
nucl-th
keywords
decompositionsexperimentalimplicationsmeasurabilitynucleonspinbeenbrief
read the original abstract
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.
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