Title :
Fine-structure constant obtained from an improved calculation of the electron g-2
Author :
Kinoshita, Toichiro
Author_Institution :
Newman Lab. of Nucl. Studies, Cornell Univ., Ithaca, NY, USA
fDate :
4/1/1997 12:00:00 AM
Abstract :
A preliminary result is presented for an accurate determination of the fine-structure constant α based on an improved evaluation of the sixth- and eighth-order radiative corrections to the electron anomalous magnetic moment αe. In combination with a very precise measurement of αe, this leads to the most accurate value of α obtained thus far, with a relative standard uncertainty of less than 4×10-9
Keywords :
constants; fine structure; measurement standards; quantum electrodynamics; radiative corrections; QED; electron anomalous magnetic moment; fine-structure constant; fundamental constants; quantum electrodynamics; radiative corrections; standard uncertainty; Electrodynamics; Electron beams; Hall effect; Josephson effect; Length measurement; Magnetic analysis; Magnetic moments; Measurement standards; Relativistic quantum mechanics; Uncertainty;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
