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Four-Loop Anomalous Dimensions for Radiative Flavour-Changing Decays
We evaluate the complete four-loop anomalous dimension matrix that is necessary for determining the effective flavour-changing neutral current couplings qbar-q'-gamma and qbar-q'-g at the next-to-next-to-leading order in QCD. The resulting O(alpha_s^2(mu_b)) correction to the B -> X_s g...
| Autores principales: | , , |
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| Lenguaje: | eng |
| Publicado: |
2006
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1088/1126-6708/2007/03/008 http://cds.cern.ch/record/1007759 |