Strange Magnetism and the Anapole Structure of the Proton

Details Strange Magnetism and the Anapole Structure of the Proton Strange Magnetism and the Anapole Structure of the Proton

2001-02-03

arxiv.org/abs/nucl-ex/0102001v1

Science 290 (2000) 2117

Physics

Nuclear Physics

Nuclear Experiment

9 pages, 3 figures

Scientific paper

The violation of mirror symmetry in the weak force provides a powerful tool to study the internal structure of the proton. Experimental results have been obtained that address the role of strange quarks in generating nuclear magnetism. The measurement reported here provides an unambiguous constraint on strange quark contributions to the proton's magnetic moment through the electron-proton weak interaction. We also report evidence for the existence of a parity-violating electromagnetic effect known as the anapole moment of the proton. The proton's anapole moment is not yet well understood theoretically, but it could have important implications for precision weak interaction studies in atomic systems such as cesium.

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