Abstract.
We study the renormalization of normal mixing matrices, which include hermitian and unitary matrices as particular cases. We give a minimal, multiplicative parameterization of counterterms, and compute the renormalized Lagrangian to one-loop order in several simple models with N species of fermions, both in on-shell and \(\overline{\mathrm{MS}}\) schemes. In the on-shell scheme the mass-degenerate case is considered separately.
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Received: 13 December 2000 / Published online: 11 May 2001
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Bouzas, A. Mixing-matrix renormalization revisited. Eur. Phys. J. C 20, 239–252 (2001). https://doi.org/10.1007/s100520100663
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DOI: https://doi.org/10.1007/s100520100663