Regge-like quark-antiquark excitations in the effective-action formalism
| Autor: | Antonov, D., Ribeiro, J. E. F. T. |
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| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | PoS QCD-TNT-II:004,2011 |
| Druh dokumentu: | Working Paper |
| Popis: | Radial excitations of the quark-antiquark string sweeping the Wilson-loop area are considered in the framework of the effective-action formalism. Identifying these excitations with the daughter Regge trajectories, we find corrections which they produce to the constituent quark mass. The energy of the quark-antiquark pair turns out to be mostly saturated by the constituent quark masses, rather than by the elongation of the quark-antiquark string. Specifically, while the constituent quark mass turns out to increase as the square root of the radial-excitation quantum number, the energy of the string increases only as the fourth root of that number. Comment: 11 pages, 2 figures, talk given at the International Workshop on QCD Green's Functions, Confinement and Phenomenology, 5-9 September 2011, Trento, Italy |
| Databáze: | arXiv |
| Externí odkaz: |
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