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Remark on the minimal seesaw model and leptogenesis with tribimaximal mixing

Teruyuki Kitabayashi*

  • Department of Physics, Tokai University, 1117 Kitakaname, Hiratsuka, Kanagawa, 259-1292, Japan

  • *teruyuki@keyaki.cc.u-tokai.ac.jp
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Phys. Rev. D 76, 033002 – Published 16 August, 2007

DOI: https://doi.org/10.1103/PhysRevD.76.033002

Abstract

We have studied a leptogenesis scenario in the framework of the minimal seesaw model with tribimaximal mixing. Usually, at least one of the elements in the Dirac mass matrix is fixed to be zero, for example, we denote it by b2=0. We have pointed out that the absolute value of the CP asymmetry has several minimums and maximums with nonzero b2. Thus one can expect that more rich phenomena, such as an enhanced leptogenesis, are hidden in the b2≠0 space.

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Phys. Rev. D 76, 033002– Published 16 August, 2007
  • Received 22 March 2007

© 2007 American Physical Society

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