Measurement of the Muon (g − 2)-value B. Lee Roberts on Behalf of the Muon (g − 2) Collaboration
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چکیده
The muon (g − 2) experiment is described, and the recent results are presented. These results represent the final measurement for the positive muon.
منابع مشابه
Results and Future Prospects for Muon (g − 2) *
Spin physics had its beginnings in the famous experiments of Stern and Gerlach, which eventually resulted in the postulation of spin by Goudsmit and Uhlenbeck. The Stern-Gerlach experiment told us that the g-value of the electron was 2, but we now know that because of radiative corrections, the g-value of the leptons is slightly greater than 2, the lowest-order contribution being α/π, where α i...
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B. Lee Roberts , Department of Physics, Boston University, Boston, MA 02215, USA for the Muon Collaboration[1] Abstract The Muon experiment, E821, at the Brookhaven AGS has the goal to measure the muon anomalous magnetic moment to a relative accuracy of . A superferric 14 m diameter storage ring has been constructed and an averaged magnetic field uniformity over the 90 mm diameter muon storage ...
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The Muon (g − 2) experiment, E821, at the Brookhaven AGS has the goal to measure the muon anomalous magnetic moment to a relative accuracy of ±3.5 × 10 −7. A su-perferric 14 m diameter storage ring has been constructed and an averaged magnetic field uniformity over the 90 mm diameter muon storage region of ± 1 part per million (ppm) has been achieved. A truncated double-cosine super-conducting ...
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A charged particle with spin ~s has a magnetic moment ~μs = gs(e/2m)~s; an anomaly a ≡ (gs − 2)/2; and μ = (1+a)eh̄/2m; where gs is the gyromagnetic ratio, and the latter expression is what one finds in the Particle Data Tables.[1] The g-value is exactly 2 for a point-like fermion in the Dirac equation, but radiative corrections give rise to a non-zero value for the anomaly a. The lowest order (...
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The muon (g − 2) experiment at the Brookhaven AGS achieved a relative precision on the muon anomalous magnetic moment, a μ , of ±0.54 ppm. The anomaly is sensitive to a wide range of physics beyond the standard model such as supersymmetry, and thus can help constrain the interpretation of any " new physics " found at the Large Hadron Collider. It is desirable to improve the precision of the exp...
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