The angular momentum controversy: What's it all about and does it matter?
by E. Leader, C. Lorce
Publisher: arXiv 2013
Number of pages: 96
The general question, crucial to an understanding of the internal structure of the nucleon, of how to split the total angular momentum of a photon or gluon into spin and orbital contributions is one of the most important and interesting challenges faced by gauge theories like Quantum Electrodynamics and Quantum Chromodynamics.
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