Observability of the anapole moment and neutrino charge radius
Sep, 199029 pages
Published in:
- Phys.Rev.D 43 (1991) 2956-2970
Report number:
- MIT-CTP-1896
Citations per year
Abstract: (APS)
The properties of the neutrino charge radius (NCR) and anapole moments (AM's) of elementary fermions, nucleons, and nuclei are discussed. The dependence of these off-shell electromagnetic couplings on the weak gauge parameter is explicitly demonstrated by a calculation performed in the Rξ gauge. The gauge dependence of the AM's and NCR implies that they cannot be observed in isolation from other second-order, electroweak effects. It is shown, however, that the AM's of various hadronic systems having an SU(2)L quantum number T3L=0 can be considered "observables" in certain formal, though unphysical, limits. It is argued that, apart from these special limits, the AM is a physically meaningful entity only for heavy and/or nearly degenerate nuclei.- neutrino: form factor
- form factor: neutrino
- fermion: form factor
- form factor: fermion
- nucleon: form factor
- form factor: nucleon
- nucleus: form factor
- form factor: nucleus
- form factor: electric
- electric: form factor
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