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Estimates of Long-distance Contributions to the $B_{s}\to\gamma\gamma$ Decay
We present first calculations of new long-distance contributions to $B_s \to relevant $\gamma$ vertices are estimated using charge couplings and transition moment couplings. Within our uncertainties, we find that these long-distance contributions could be comparable to the known short-distance contr...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
1998
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/S0370-2693(98)00679-0 http://cds.cern.ch/record/352301 |