CP-safe gravity mediation and muon g - 2

Sho Iwamoto, Tsutomu T. Yanagida, Norimi Yokozaki

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


We propose a CP-safe minimal supersymmetric (SUSY) standard model in gravity mediation, where the phases of the Higgs B parameter, scalar trilinear couplings, and gaugino mass parameters are all aligned. Since all dangerous CP-violating phases are suppressed, we are now safe to consider low-energy SUSY scenarios under the assumption that the SUSY flavorchanging neutral current problem is solved. As an application, we consider a gravity mediation model explaining the observed muon g - 2 anomaly. The CP-safe property originates in two simple assumptions: SUSY breaking in the Kähler potential and the shift symmetry of a SUSYbreaking field Z. As a result of the shift symmetry, the imaginary part of Z behaves as a QCD (quantum chromodynamics) axion, leading to an intriguing possibility: the strong CP problem in QCD and the SUSY CP problem are solved simultaneously.

Original languageEnglish
Article number073B01
JournalProgress of Theoretical and Experimental Physics
Issue number7
Publication statusPublished - 2015 Jul
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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