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Canonical and kinetic decompositions of the proton spin

Abstract : We propose a short summary of the present situation concerning the proton spin decomposition. We briefly discuss some of the main controversies about the issues of gauge invariance, uniqueness and measurability. As a conclusion, we argue that part of the controversies is actually undecidable.
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Submitted on : Wednesday, May 29, 2013 - 11:24:36 AM
Last modification on : Wednesday, September 16, 2020 - 4:07:56 PM

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C. Lorcé. Canonical and kinetic decompositions of the proton spin. 3rd Workshop on the QCD Structure of the Nucleon (QCD-N'12), Oct 2012, Bilbao, Spain. pp.15-18, ⟨10.1393/ncc/i2013-11585-3⟩. ⟨in2p3-00827449⟩



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