The effects of Majorana phases in three-generation neutrinos |
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| Authors: | N Haba Y Matsui N Okamura |
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| Institution: | (1) Faculty of Engineering, Mie University, Tsu Mie 514-8507, Japan, JP;(2) Department of Physics, Nagoya University, Nagoya, 464-8602, Japan, JP;(3) Theory Group, KEK, Tsukuba Ibaraki 305-0801, Japan, JP |
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| Abstract: | Neutrino-oscillation solutions for the atmospheric neutrino anomaly and the solar neutrino deficit can determine the texture
of the neutrino mass matrix according to three types of neutrino mass hierarchy: Type A: , Type B: , and Type C: , where is the absolute mass of the ith generation neutrino. The relative sign assignments of the neutrino masses in each type of mass hierarchy play crucial roles
in the stability against quantum corrections. Actually, two physical Majorana phases in the lepton flavor mixing matrix connect
the relative sign assignments of the neutrino masses. Therefore, in this paper we analyze the stability of the mixing angles
against quantum corrections according to three types of neutrino mass hierarchy (Type A, B, C) and two Majorana phases. The
two phases play crucial roles in the stability of the mixing angles against quantum corrections.
Received: 9 May 2000 / Revised version: 23 May 2000 / Published online: 8 September 2000 |
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