Nucleon EDM from atomic systems and constraints on supersymmetry parameters

Sachiko Oshima*, Takeshi Nihei, Takehisa Fujita

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The nucleon EDM is shown to be directly related to the EDM of atomic systems. From the observed EDM values of the atomic Hg system, the neutron EDM can be extracted, which gives a very stringent constraint on the supersymmetry parameters. It is also shown that the measurement of Nitrogen and Thallium atomic systems should provide important information on the flavor dependence of the quark EDM. We perform numerical analyses on the EDM of neutron, proton and electron in the minimal supersymmetric standard model with CP-violating phases. We demonstrate that the new limit on the neutron EDM extracted from atomic systems excludes a wide parameter region of supersymmetry breaking masses above 1 TeV, while the old limit excludes only a small mass region below 1 TeV.

Original languageEnglish
Pages (from-to)2480-2486
Number of pages7
JournalJournal of the Physical Society of Japan
Issue number9
Publication statusPublished - 2005 Sep
Externally publishedYes


  • Nucleon EDM
  • Supersymmetry

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'Nucleon EDM from atomic systems and constraints on supersymmetry parameters'. Together they form a unique fingerprint.

Cite this