Measurement of the Fermi constant by FAST

Barczyk, A.; Kirkby, J.; Malgeri, L.; Berdugo, J.; Casaus, J.; Mañá, C.; Marín, J.; Martínez, G.; Sánchez, E.; Willmott, C.; Casella, Maria Chiara; Pohl, Martin; Deiters, K.; Dick, P.; Petitjean, C.

doi:10.1016/j.physletb.2008.04.006

Scientific article

English

Measurement of the Fermi constant by FAST

ContributorsBarczyk, A.; Kirkby, J.; Malgeri, L.; Berdugo, J.; Casaus, J.; Mañá, C.; Marín, J.; Martínez, G.; Sánchez, E.; Willmott, C.; Casella, Maria Chiara; Pohl, Martin; Deiters, K.; Dick, P.; Petitjean, C.

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

Publication date2008

Abstract

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).

Affiliation entities

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

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

Article (Published version)

Identifiers

PID : unige:41606
DOI : 10.1016/j.physletb.2008.04.006

Additional URL for this publicationhttp://linkinghub.elsevier.com/retrieve/pii/S037026930800419X

Journal ISSN0370-2693

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Measurement of the Fermi constant by FAST

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