Note on CKM matrix renormalization
Abstract
A simple inspection of the one loop quark selfenergy suggests a prescription of the CKM matrix renormalization in the standard model. It leads to a CKM matrix counterterm which is gauge parameter independent and satisfies the unitarity constraint, and renormalized physical amplitudes which are gauge parameter independent and smooth in quark mass difference. We make a point that caution should be practiced when interpreting the CKM martix counterterm in terms of those of parameters in a given representation due to rephasing effects from renormalization. We show how this can be done using the degrees of freedom in the onshell renormalization scheme.
 Publication:

Physical Review D
 Pub Date:
 January 2004
 DOI:
 10.1103/PhysRevD.69.016001
 arXiv:
 arXiv:hepph/0309034
 Bibcode:
 2004PhRvD..69a6001L
 Keywords:

 11.10.Gh;
 12.15.Ff;
 Renormalization;
 Quark and lepton masses and mixing;
 High Energy Physics  Phenomenology
 EPrint:
 version 1: 10 pages, no figures