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Radiative corrections to neutrino mixing and CP violation in the minimal seesaw model with leptogenesis

Jian-wei Mei* and Zhi-zhong Xing†,‡

  • CCAST (World Laboratory), P. O. Box 8730, Beijing 100080, China
  • Institute of High Energy Physics, Chinese Academy of Sciences, P. O. Box 918 (4), Beijing 100039, China

  • *Electronic address: jwmei@mail.ihep.ac.cn
  • †Electronic address: xingzz@mail.ihep.ac.cn
  • ‡Mailing address.
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Phys. Rev. D 69, 073003 – Published 9 April, 2004

DOI: https://doi.org/10.1103/PhysRevD.69.073003

Abstract

Radiative corrections to neutrino mixing and CP violation are analyzed in the minimal seesaw model with two heavy right-handed neutrinos. We find that the textures of the effective Majorana neutrino mass matrix are essentially stable against renormalization effects. Taking into account the Frampton-Glashow-Yanagida Ansatz for the Dirac neutrino Yukawa coupling matrix, we calculate the running effects of light neutrino masses, lepton flavor mixing angles, and CP-violating phases for both the m1=0 (normal mass hierarchy) and m3=0 (inverted mass hierarchy) cases in the standard model and in its minimal supersymmetric extension. Very instructive predictions for the cosmological baryon number asymmetry via thermal leptogenesis are also given with the help of low-energy neutrino mixing quantities.

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Phys. Rev. D 69, 073003– Published 9 April, 2004
  • Received 12 December 2003

© 2004 American Physical Society

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