Scientific article
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Measurement of the Fermi constant by FAST

Published inPhysics letters. B, vol. 663, no. 3, p. 172-180
Publication date2008

An initial measurement of the lifetime of the positive muon to a precision of 16 parts per million (ppm) has been performed with the FAST1 detector at the Paul Scherrer Institute. The result is τμ=2.197083(32)(15)μs, where the first error is statistical and the second is systematic. The muon lifetime determines the Fermi constant, GF=1.166352(9)×10−5GeV−2 (8 ppm).

Citation (ISO format)
BARCZYK, A. et al. Measurement of the Fermi constant by FAST. In: Physics letters. B, 2008, vol. 663, n° 3, p. 172–180. doi: 10.1016/j.physletb.2008.04.006
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ISSN of the journal0370-2693

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