Eur. Phys. J. C 10, 677-680
Energy-scale dependence of the lepton flavor-mixing matrix
N. Haba1,2 - Y. Matsui3 - N. Okamura4 - M. Sugiura3
1 Department of Physics, The Ohio State University, Columbus, OH 43210, USA
2 Faculty of Engineering, Mie University, Tsu Mie 514-8507, Japan
3 Department of Physics, Nagoya University, Nagoya, 464-8602, Japan (e-mail: matsui,firstname.lastname@example.org) 4 Theory Group, KEK, Tsukuba Ibaraki 305-0801, Japan (e-mail: email@example.com)
Received: 10 April 1999 / Revised version: 23 May 1999 / Published online: 28 September 1999
We study an energy-scale dependence of the lepton flavor-mixing matrix in the minimal supersymmetric standard model with the effective dimension-five operators, which give Majorana masses of neutrinos. We analyze the renormalization group equations of the coefficients () of these effective operators under an approximation that neglects terms of order . We find that only (where is the generation number) real independent parameters in the lepton flavor-mixing matrix depend on the energy scale. In particular, all the phases in are scale-independent.