Extended double seesaw model and low scale leptogenesis

Sin Kyu Kang, C. S. Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)


We propose a variant of seesaw mechanism by introducing extra singlet neutrinos, with which we show how the low scale leptogenesis is realized without imposing the tiny mass splitting between two heavy Majorana neutrinos required in the resonant leptogenesls. Thus, the so-called gravitino problem encountered in the typical supersymmetric seesaw model can be avoided. It is showed that an introduction of the new singlet fermion leads to a new contribution which can enhance the lepton asymmetry for certain range of parameter space.

Original languageEnglish
Pages (from-to)1505-1512
Number of pages8
JournalInternational Journal of Modern Physics E
Issue number5
Publication statusPublished - 2007 Jun

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy(all)

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