The neutron spin rotation induced by parity-violating (PV) components in the nucleon-nucleon potential is studied in n-polarized - d scattering at zero energy. Results are obtained corresponding to the Argonne v(18) two-nucleon and Urbana-IX three-nucleon strong-interaction potentials in combination with either the Desplanques-Donoghue-Holstein or pionless effective field theory models for the weak-interaction potential. We find that this observable is dominated by the contribution of the long-range part of the PV potential associated with pion exchange. Thus its measurement could provide a further constraint, complementary to that coming from measurements of the photon asymmetry in n-polarized - p radiative capture, on the strength of this component of the hadronic weak interaction.
Neutron spin rotation in n-polarized - d scattering
GIRLANDA, Luca;
2008-01-01
Abstract
The neutron spin rotation induced by parity-violating (PV) components in the nucleon-nucleon potential is studied in n-polarized - d scattering at zero energy. Results are obtained corresponding to the Argonne v(18) two-nucleon and Urbana-IX three-nucleon strong-interaction potentials in combination with either the Desplanques-Donoghue-Holstein or pionless effective field theory models for the weak-interaction potential. We find that this observable is dominated by the contribution of the long-range part of the PV potential associated with pion exchange. Thus its measurement could provide a further constraint, complementary to that coming from measurements of the photon asymmetry in n-polarized - p radiative capture, on the strength of this component of the hadronic weak interaction.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
