NDLI: New determination of the fine structure constant and test of the quantum electrodynamics

Content Provider	IEEE Xplore Digital Library
Author	Clade, P. Bouchendira, R. Guellati, S. Nez, F. Biraben, F.
Copyright Year	2011
Description	Author affiliation: Conservatoire National des Arts et Métiers, 292 rue Saint Martin, 75003 Paris, France (Guellati, S.) \|\| Laboratoire Kastler Brossel, Ecole Normale Supérieure, Université Pierre et Marie Curie, CNRS, 4 place Jussieu, 75005 Paris, France (Clade, P.; Bouchendira, R.; Nez, F.; Biraben, F.)
Abstract	We present a new measurement of the ratio h/m between the Planck constant and the mass of $^{87}Rb$ atom. A new value of the fine structure constant is deduced, $α^{−1}$ = 137.035 999037 (91) with a relative uncertainty of 6.6 × $10^{−10}.$ Using this determination, we obtain a theoretical value of the electron anomaly a = 0.001 159 652 181 13(84) which is in agreement with the experimental measurement of Gabrielse (a = 0.001 159 652 180 73(28)). The comparison of these values provides the most stringent test of the QED. Moreover, the precision is large enough to verify for the first time the muonic and hadronic contributions to this anomaly.
Starting Page	1090
Ending Page	1091
File Size	307759
Page Count	2
File Format	PDF
ISBN	9781457719394
e-ISBN	9780977565788
DOI	10.1109/IQEC-CLEO.2011.6193626
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-08-28
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Atomic measurements Velocity measurement Uncertainty Educational institutions Measurement uncertainty Magnetic moments Equations
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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