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Form factor of the process $\gamma^{*}\gamma^{*}$ --> $\pi^{0}$ for small virtuality of one of the photons and QCD sum rules; 2, sum rule
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
1994
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| Materias: | |
| Acceso en línea: | http://cds.cern.ch/record/271293 |