Parity-Violating Interaction Effects in the np System (2008)
BibTeX
@MISC{Schiavilla08parity-violatinginteraction,
author = {R. Schiavilla and J. Carlson and M. Paris},
title = {Parity-Violating Interaction Effects in the np System},
year = {2008}
}
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Abstract
We investigate parity-violating observables in the np system, including the longitudinal asymmetry and neutron-spin rotation in ⃗np elastic scattering, the photon asymmetry in ⃗np radiative capture, and the asymmetries in deuteron photo-disintegration d(⃗γ,n)p in the threshold region and electrodisintegration d(⃗e,e ′)np in quasi-elastic kinematics. To have an estimate of the model dependence for the various predictions, a number of different, latest-generation strong-interaction potentials—Argonne v18, Bonn 2000, and Nijmegen I—are used in combination with a weak-interaction potential consisting of π-, ρ-, and ω-meson exchanges—the model known as DDH. The complete bound and scattering problems in the presence of parity-conserving, including electromagnetic, and parity-violating potentials is solved in both configuration and momentum space. The issue of electromagnetic current conservation is examined carefully. We find large cancellations between the asymmetries induced by the parity-violating interactions and those arising
Keyphrases
np system parity-violating interaction effect quasi-elastic kinematics np radiative capture weak-interaction potential consisting large cancellation parity-violating interaction deuteron photo-disintegration longitudinal asymmetry neutron-spin rotation meson exchange photon asymmetry electromagnetic current conservation parity-violating observables various prediction np elastic scattering momentum space complete bound model dependence latest-generation strong-interaction potential argonne v18 parity-violating potential threshold region
