The ground state of a spin- 1/2 neutral particle with anomalous magnetic moment in a two-dimensional electrostatic field

1993 ◽  
Vol 26 (20) ◽  
pp. 5631-5634 ◽  
Author(s):  
B Roy
Author(s):  
S N Nedelko ◽  
Aleksei Nikolskii ◽  
Vladimir Voronin

Abstract An impact of nonperturbatively treated soft gluon modes on the value of anomalous magnetic moment of muon a_µ is studied within the mean-field approach to QCD vacuum and hadronization. It is shown that radial excitations of vector mesons strongly enhance contribution of hadronic vacuum polarization to a_µ, doubling the contribution of one-meson processes compared to the result for ground state mesons. The mean field also strongly influences the hadronic light-by-light scattering contribution due to the Wilson line in quark propagators.


2002 ◽  
Vol 80 (11) ◽  
pp. 1297-1303 ◽  
Author(s):  
S I Eidelman ◽  
S G Karshenboim ◽  
V A Shelyuto

The contributions of hadronic effects to muonium physics and the anomalous magnetic moment of muon are considered. Special attention is paid to higher order effects and the uncertainty related to the hadronic contribution to the hyperfine-structure interval in the ground state of muonium. PACS Nos.: 12.20-m, 36.10Dr, 31.30Jv, 13.65+i


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