Affleck-Dine baryogenesis with R-parity violation

Tetsutaro Higaki, Kazunori Nakayama, Ken'Ichi Saikawa, Tomo Takahashi, Masahide Yamaguchi

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We investigate whether the baryon asymmetry of the Universe is explained in the framework of the supersymmetric extension of the Standard Model with R-parity violating interactions. It is shown that the Affleck-Dine mechanism naturally works via a trilinear interaction LLEc, LQDc, or UcDcDc, if the magnitude of the coupling corresponding to the operator λ, λ′, or λ′′ is sufficiently small. The formation of Q-balls and their subsequent evolution are also discussed. The present baryon asymmetry can be explained in the parameter region where R-parity is mildly violated 10-9λ 10-6 and the mass of the gravitino is relatively heavy m3/104GeV. On the other hand, it is difficult to explain the present baryon asymmetry for larger values of R-parity violating couplings λ 10-5, since Q-balls are likely to be destructed in the thermal environment and the primordial baryon number is washed away.

Original languageEnglish
Article number045001
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume90
Issue number4
DOIs
Publication statusPublished - 2014 Aug 1
Externally publishedYes

ASJC Scopus subject areas

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

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