Nuclear Spin-Isospin Correlations, Parity Violation, and the $f_π$ Problem

Details Nuclear Spin-Isospin Correlations, Parity Violation, and the $f_π$ Problem Nuclear Spin-Isospin Correlations, Parity Violation, and the $f_π$ Problem

2003-01-06

arxiv.org/abs/nucl-th/0301012v2

Phys.Rev. C67 (2003) 042501

Physics

Nuclear Physics

Nuclear Theory

8 pages 2 figures there should have been two figures in v1

Scientific paper

10.1103/PhysRevC.67.042501

The strong interaction effects of isospin- and spin-dependent nucleon-nucleon correlations observed in many-body calculations are interpreted in terms of a one-pion exchange mechanism. Including such effects in computations of nuclear parity violating effects leads to enhancements of about 10%. A larger effect arises from the one-boson exchange nature of the parity non-conserving nucleon- nucleon interaction, which depends on both weak and strong meson-nucleon coupling constants. Using values of the latter that are constrained by nucleon-nucleon phase shifts leads to enhancements of parity violation by factors close to two. Thus much of previously noticed discrepancies between weak coupling constants extracted from different experiments can be removed.

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