DOI 10.1007/s100529900040
Renormalization group evolution of the CKM matrix
C. Balzereit - T. Hansmann - T. Mannel - B. Plümper
Institut für Theoretische Teilchenphysik, Universität Karlsruhe, D-76128 Karlsruhe, Germany
Received: 24 October 1998 / Revised version: 16 February 1999 / Published online: 15 April 1999
Abstract
We compute the renormalization of the complete CKM matrix
in the 
scheme and perform a renormalization group analysis
of the CKM parameters. The calculation is simplified by
studying only the Higgs sector, which for the 
-function
of the CKM matrix is at one loop the same as in the full Standard Model.
The renormalization group flow including QCD corrections
can be computed analytically
using the hierarchy of the CKM parameters and the large mass
differences between the quarks. While the evolution of
the Cabibbo angle is tiny
Vub and Vcb increase sizably.
We compare our results with the ones in the full Standard Model.
Copyright Springer-Verlag
