Nuclear Data in Oklo and Time-Variability of Fundamental Coupling Constants

Details Nuclear Data in Oklo and Time-Variability of Fundamental Coupling Constants Nuclear Data in Oklo and Time-Variability of Fundamental Coupling Constants

2002-05-19

arxiv.org/abs/hep-ph/0205206v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, 1 figure, presented at Int. Conf. on Nuclear Data for Science and Technology, ND2001, 7-12 October, 2001, Tsukuba, Ja

Scientific paper

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, $|\dot{\alpha}/\alpha |\lsim 10^{-17}{\rm y}^{-1}$, was basically correct. In addition to this upper bound, however, we obtained another result that indicates a different value of $\alpha$ 2 billion years ago. We add comments on the recent result from QSO's.

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