Nucleon and nuclear anapole moments

Journal Article · Mon Aug 28 04:00:00 EDT 1989 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.63.949· OSTI ID:5591050

Haxton, W C; Henley, E M ^[1]; Musolf, M J ^[2]

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1. Institute for Nuclear Theory, Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (US)
2. Joseph Henry Laboratories, Post Office Box 708, Princeton University, Princeton, New Jersey 08544

The leading {ital T}-conserving {ital P}-nonconserving (PNC) electromagnetic coupling to the nucleon or nucleus is known as the anapole moment. We evaluate the pion-cloud contribution to the nucleon anapole moment, and the enhancements in nuclei associated with meson-exchange currents and with the mixing of the nuclear ground state with opposite-parity excited states. We find that the anapole moment becomes the dominant PNC spin-dependent coupling in heavy nuclei.

• OSTI ID: 5591050
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 63:9; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

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BARYONS
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