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A sum rule from the shape function
We present a sum rule relating the electron energy spectrum and the hadron mass distribution in semileptonic b -> u decays close to threshold. The relation found is free from non-perturbative effects and the theoretical error is expected to be O(5%). An experimental confirmation of this predictio...
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| Lenguaje: | eng |
| Publicado: |
2000
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| Acceso en línea: | http://cds.cern.ch/record/471495 |