Search for permanent EDM using laser cooled Fr atoms

Hirokazu Kawamura, T. Aoki, H. Arikawa, S. Ezure, T. Furukawa, K. Harada, A. Hatakeyama, K. Hatanaka, T. Hayamizu, K. Imai, T. Inoue, T. Ishikawa, M. Itoh, T. Kato, T. Murakami, H. S. Nataraj, T. Sato, Y. Shimizu, T. Wakasa, H. P. YoshidaY. Sakemi

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


The existence of a non-zero electric dipole moment (EDM) implies the violation of time reversal symmetry. As the time-reversal symmetry violation predicted by the Standard Model (SM) for the electron EDM is too small to be observed with current experimental techniques and any a non-zero EDM would indicate new physics beyond the SM. The tiny signal from the electron EDM is enhanced in the heavy atoms such as francium (Fr). We are constructing the laser-cooled Fr factory to search for the electron EDM.

Original languageEnglish
Pages (from-to)133-139
Number of pages7
JournalHyperfine Interactions
Issue number1-3
Publication statusPublished - 2013 Mar


  • Electric dipole moment
  • Laser cooling and trapping
  • Radioactive francium


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