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Complete NNLO QCD Analysis of $\overline{B} \to X_{s} l^{+} l^{-}$ and Higher Order Electroweak Effects
We complete the next-to-next-to-leading-order QCD calculation of the branching ratio for B -> X_s l^+ l^- including recent results for the three-loop anomalous dimension matrix and two-loop matrix elements. These new contributions modify the branching ratio in the low-q^2 region, BR_ll, by about...
| Autores principales: | , , , |
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| Lenguaje: | eng |
| Publicado: |
2003
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1088/1126-6708/2004/04/071 http://cds.cern.ch/record/690283 |