Nuclear Data in Oklo and Time-Variability of Fundamental Coupling Constants
Yasunori Fujii, Akira Iwamoto, Tokio Fukahori, Toshihiko Ohnuki, Masayuki Nakagawa, Hiroshi Hidaka, Yasuji Oura, Peter Moller
Abstract
We re-examined Shlyakhter's analysis of the Sm data in Oklo. With a special care of minimizing contamination due to the inflow of the isotope after the end of the reactor activity, we confirmed that his result on the time-variability of the fine-structure constant, |α/α| 10-17 y-1, was basically correct. In addition to this upper bound, however, we obtained another result that indicates a different value of α 2 billion years ago. We add comments on the recent result from QSO's.
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