Extracting nucleon strange and anapole form factors from world data

Details Extracting nucleon strange and anapole form factors from world data Extracting nucleon strange and anapole form factors from world data

2006-04-17

arxiv.org/abs/nucl-ex/0604010v2

Phys.Rev.Lett.97:102002,2006

Physics

Nuclear Physics

Nuclear Experiment

4 pages, 3 figs; v2: version to appear in PRL

Scientific paper

10.1103/PhysRevLett.97.102002

The complete world set of parity violating electron scattering data up to Q^2~0.3 GeV^2 is analysed. We extract the current experimental determination of the strange electric and magnetic form factors of the proton, as well as the weak axial form factors of the proton and neutron, at Q^2 = 0.1 GeV^2. Within experimental uncertainties, we find that the strange form factors are consistent with zero, as are the anapole contributions to the axial form factors. Nevertheless, the correlation between the strange and anapole contributions suggest that there is only a small probability that these form factors all vanish simultaneously.

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