Can MSSM particle be the inflaton?

Shinta Kasuya, Takeo Moroi, Fuminobu Takahashi

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


We consider the possibility of using one of the D-flat directions in the minimal supersymmetric standard model (MSSM) as the inflaton. We show that the flat direction consisting of (first generation) left- and right-handed up-squarks as well as the up-type Higgs boson may play the role of the inflaton if dominant part of the up-quark mass is radiatively generated from supersymmetric loop diagrams. We also point out that, if the R-parity violating Yukawa coupling is of O(10-7), R-odd D-flat directions may be another possible candidate of the inflaton. Such inflation models using D-flat directions in the MSSM are not only testable with collider experiments but also advantageous to resolve the problem how the inflaton reheats the Universe.

Original languageEnglish
Pages (from-to)33-41
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-4
Publication statusPublished - 2004 Jul 22


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