[L'état de l'art de la détermination de la constante de structure fine et du rapport h/mu]
La constante de structure fine α et le rapport entre la constante de Planck et la masse atomique unifiée sont des constantes clés pour la détermination d'autres constantes physiques fondamentales, notamment celles impliquées dans le futur Système international d'unités. Cet article présente comment ces deux constantes, qui peuvent être déduites l'une de l'autre, sont mesurées. Nous présenterons en détail la mesure de effectuée par interférométrie atomique au laboratoire Kastler Brossel à Paris. Ce type de mesure permet également d'effectuer un test du modèle standard avec une précision inégalée.
The fine structure constant α and the ratio between the Planck constant and the unified atomic mass are keystone constants for the determination of other fundamental physical constants, especially the ones involved in the framework of the future International System of units. This paper presents how these two constants, which can be deduced from one another, are measured. We will present in detail the measurement of performed by atomic interferometry at the Laboratoire Kastler Brossel in Paris. This type of measurement also allows a test of the standard model to be carried out with unparalleled accuracy.
Mot clés : Constante de structure fine, Moment magnétique anormal de l'électron, Interférométrie atomique, Système d'unités international
Pierre Cladé 1 ; François Nez 1 ; François Biraben 1 ; Saïda Guellati-Khelifa 1, 2
@article{CRPHYS_2019__20_1-2_77_0, author = {Pierre Clad\'e and Fran\c{c}ois Nez and Fran\c{c}ois Biraben and Sa{\"\i}da Guellati-Khelifa}, title = {State of the art in the determination of the fine-structure constant and the ratio \protect\emph{h}/\protect\emph{m}\protect\textsubscript{u}}, journal = {Comptes Rendus. Physique}, pages = {77--91}, publisher = {Elsevier}, volume = {20}, number = {1-2}, year = {2019}, doi = {10.1016/j.crhy.2018.12.003}, language = {en}, }
TY - JOUR AU - Pierre Cladé AU - François Nez AU - François Biraben AU - Saïda Guellati-Khelifa TI - State of the art in the determination of the fine-structure constant and the ratio h/mu JO - Comptes Rendus. Physique PY - 2019 SP - 77 EP - 91 VL - 20 IS - 1-2 PB - Elsevier DO - 10.1016/j.crhy.2018.12.003 LA - en ID - CRPHYS_2019__20_1-2_77_0 ER -
%0 Journal Article %A Pierre Cladé %A François Nez %A François Biraben %A Saïda Guellati-Khelifa %T State of the art in the determination of the fine-structure constant and the ratio h/mu %J Comptes Rendus. Physique %D 2019 %P 77-91 %V 20 %N 1-2 %I Elsevier %R 10.1016/j.crhy.2018.12.003 %G en %F CRPHYS_2019__20_1-2_77_0
Pierre Cladé; François Nez; François Biraben; Saïda Guellati-Khelifa. State of the art in the determination of the fine-structure constant and the ratio h/mu. Comptes Rendus. Physique, Volume 20 (2019) no. 1-2, pp. 77-91. doi : 10.1016/j.crhy.2018.12.003. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2018.12.003/
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