We discuss the implications of a doorway state model for parity mixing in compound nuclear states. We argue that in order to explain the tendency of parity violating asymmetries measured in 233Th to have a common sign, doorways that contribute to parity mixing must be found in the same energy neighbourhood of the measured resonance. The mechanism of parity mixing in this case of nearby doorways...

Low-energy neutral-current couplings arising in the Standard Model of electroweak interactions can be constrained lepton scattering off hydrogen or a nuclear fixed target. Recent polarized electron experiments at Jefferson Lab (JLab) have improved precision parity-violating types effective couplings. On other hand, only known way to access parity-conserving counterparts is compare cross section...