New Results from the Muon g-2 Experiment.

Sichtermann, E. P. ; Bennett, G. W. ; Bousquet, B. ; Brown, H. N. ; Bunce, G. ; Carey, R. M.

Technical Information Center Oak Ridge Tennessee

关键词: Quantum chromodynamics;    Quantum electrodynamics;    Muons;    G value;    Standard model;   

RP-ID  :  DE200415006631

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The Muon g-2 collaboration has measured the anomalous magnetic g value, a= (g-2)/2, of the positive muon with an unprecedented uncertainty of O.7parts per million. The result a(sub(mu)(sup+))(expt)= 11 659 204(7)(5) x 10(sup -10), based on data collected in the year 2000 at Brookhaven National Laboratory, is in good agreement with the preceding data on a(sub(mu)(sup+)) and a(sub(mu)(sup -)). The measurement tests standard model theory, which at the level of the current experimental uncertainty involves quantum electrodynamics, quantum chromodynamics, and electroweak interaction in a significant way.