Baryogenesis in a Flat Direction with Neither Baryon nor Lepton Charge

Takeshi Chiba, Fuminobu Takahashi, Masahide Yamaguchi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We present a new mechanism of spontaneous baryogenesis. Usually such mechanisms require a derivative coupling between a scalar field and baryon current. In our model, the scalar field instead derivatively couples to a current associated with some global symmetry [Formula presented]. In this case, baryogenesis is still possible provided that an interaction exists, which violates the baryon and [Formula presented] symmetries simultaneously. As a concrete example, we discuss baryogenesis in a flat direction with neither baryon nor lepton charge.

Original languageEnglish
Pages (from-to)4
Number of pages1
JournalPhysical Review Letters
Issue number1
Publication statusPublished - 2004


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