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arXiv · hep-ex/0002035

Measurement of the Running of the Fine-Structure Constant

L3 Collaboration
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Abstract

Bhabha scattering data recorded at \sqrt{s}=189 GeV by the L3 detector at LEP are used to measure the running of the effective fine-structure constant for spacelike momentum transfers. The results are alpha^-1(-2.1 GeV^2) - alpha^-1(-6.25 GeV^2) = 0.78 +/- 0.26 alpha^-1(-12.25 GeV^2) - alpha^-1(-3434 GeV^2) = 3.80 +/- 1.29, in agreement with theoretical predictions.

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L3 Collaboration. 2000-02-14. Measurement of the Running of the Fine-Structure Constant. https://doi.org/10.1016/s0370-2693(00)00122-2

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