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$N \Delta$ - Transition Form Factors at Low Momentum Transfer
The three complex form factors entering the $\Delta\to N\gamma^\ast$ vertex are calculated to ${\cal O}(\epsilon^3)$ in the framework of a chiral effective theory with explicit $\Delta$(1232) degrees of freedom. Furthermore, the role of presently unknown low energy constants that affect the values o...
| Autores principales: | , , , |
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| Lenguaje: | eng |
| Publicado: |
1998
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| Materias: | |
| Acceso en línea: | http://cds.cern.ch/record/370028 |