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Nucleon spin structure, topological susceptibility and the $\eta$' singlet axial vector coupling
The observed small value of the first moment of the polarized nucleon spin structure function g_1 may be interpreted, in the Veneziano--Shore approach, as a suppression of the first moment \chi^\prime(0) of the QCD topological susceptibility. I give an extension of the Witten--Veneziano argument for...
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| Lenguaje: | eng |
| Publicado: |
1996
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| Acceso en línea: | https://dx.doi.org/10.1016/0370-2693(96)01132-X http://cds.cern.ch/record/306453 |