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Color anomaly and flavor-singlet axial charge of the proton in the chiral bag: The Cheshire Cat revisited
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Color anomaly and flavor-singlet axial charge of the proton in the chiral bag: The Cheshire Cat revisited
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| dc.contributor.author | Rho, Mannque | |
| dc.contributor.author | Vento Torres, Vicente | |
| dc.date.accessioned | 2015-05-11T10:14:07Z | |
| dc.date.available | 2015-05-11T10:14:07Z | |
| dc.date.issued | 1997 | |
| dc.identifier.citation | Rho, Mannque Vento Torres, Vicente 1997 Color anomaly and flavor-singlet axial charge of the proton in the chiral bag: The Cheshire Cat revisited Nuclear Physics A 622 4 538 552 | |
| dc.identifier.uri | http://hdl.handle.net/10550/43636 | |
| dc.description.abstract | Quantum effects inside the chiral bag induce a color anomaly which requires a compensating surface term to prevent breakdown of color gauge invariance. We show that the presence of this surface term first discovered several years ago allows one to derive in a gauge-invariant way a chiral-bag version of the Shore-Veneziano two-component formula for the flavor-singlet axial charge of the proton. This has relevance to what is referred to as the ¿proton spin problem¿ on the one hand and to the Cheshire-Cat phenomenon in hadron structure on the other. We show that when calculated to the leading order in the color gauge coupling and for a specific color electric monopole configuration in the bag, one can obtain a striking Cheshire-Cat phenomenon with a negligibly small singlet axial charge. | |
| dc.language.iso | eng | |
| dc.relation.ispartof | Nuclear Physics A, 1997, vol. 622, num. 4, p. 538-552 | |
| dc.subject | Física | |
| dc.title | Color anomaly and flavor-singlet axial charge of the proton in the chiral bag: The Cheshire Cat revisited | |
| dc.type | journal article | es_ES |
| dc.date.updated | 2015-05-11T10:14:07Z | |
| dc.identifier.doi | 10.1016/S0375-9474(97)80698-7 | |
| dc.identifier.idgrec | 075393 | |
| dc.rights.accessRights | open access | es_ES |
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