Induced Parity Nonconserving Interaction and Enhancement of Two-Nucleon Parity Nonconserving Forces

Abstract

Two-nucleon parity nonconserving (PNC) interaction induced by the single-particle PNC weak potential and the two-nucleon residual strong interaction is considered. An approximate analytical formula for this Induced PNC Interaction (IPNCI) between proton and neutron is derived ($Q(\mathbf{r}{\sigma }_p\times {\sigma }_n)\delta ({\mathbf{r}}_p-{\mathbf{r}}_n)$), and the interaction constant is estimated. As a result of coherent contributions from the nucleons to the PNC potential, IPNCI is an order of magnitude stronger ($\sim A^{1/3}$) than the residual weak two-nucleon interaction and has a different coordinate and isotopic structure (e.g., the strongest part of IPNCI does not contribute to the PNC mean field). IPNCI plays an important role in the formation of PNC effects, e.g., in neutron-nucleus reactions. In that case, it is a technical way to take into account the contribution of the distant (small) components of a compound state which dominates the result. The absence of such enhancement ($\sim A^{1/3}$) in the case of T- and P-odd interaction completes the picture.

Phys. Rev. C, to appear; 17 pages, revtex 3, no figures

References in corpus (2)

• Matrix Elements between Nuclear Compound States and Dynamical Enhancement of the Weak Interaction
• Renormalization of the P- and T-odd nuclear potentials by the strong interaction and enhancement of P-odd effective field

Cited by in corpus (14)

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• Time-reversal symmetry violation in molecules induced by nuclear magnetic quadrupole moments
• Manifestations of nuclear CP-violation in ThO molecule
• Statistical Theory of Parity Nonconservation in Compound Nuclei
• Time reversal violating Magnetic Quadrupole Moment in heavy deformed nuclei
• Many-body corrections to the nuclear anapole moment II
• Time reversal invariance violation in neutron-nucleus scattering
• Many Body Corrections to Nuclear Anapole Moment
• Nuclear spin dependence of time reversal invariance violating effects in neutron scattering
• Effects of T- and P-odd weak nucleon interaction in nuclei: renormalizations due to residual strong interaction, matrix elements between compound states and their correlations with P-violating matrix elements
• Enhancement of parity violating mixing in halo nuclei and the problem of neutron weak parity nonconserving potential constant
• Parity and Time Reversal Invariance Violation in Neutron-Nucleus Scattering
• Structure of Low-Energy Collective $0^{-}$-States in Doubly Magic Nuclei and Matrix Elements of the P-odd and P- and T-odd Weak Interaction
• Renormalization of the one-body off-diagonal Coulomb field in nuclei