Overview of hadronic parity violation

Parity violation in radiative neutron capture on the deuteron

“…with the explicit forms for the operators O (n) ij and the corresponding parameters c α n , listed in table I 2 , where coefficients c α n have dimension of [fm] and scalar functions f α n (r) have 2 Note that we use a consistent relation between the coefficient C π 6 in a weak Lagrangian [14] and the coefficient c π 1 of a weak potential, which is different from the relation used in [15], …”

“…(see, for example [1][2][3][4] and references therein) that it is rather difficult to describe the available experimental data with the same set of weak nucleon coupling constants using the traditional DDH [5] weak meson exchange potential.…”

Parity violation in low-energy neutron-deuteron scattering

“…There is a large amount of experimental data for different PV effects in nuclear physics, each of which in general agrees with theoretical predictions. However, in the last years it became clear (see, for example [1][2][3][4] and references therein) that the traditional DDH [5] method for calculation of PV effects cannot reliably describe the whole available set of experimental data within the same set of parameters. If this is not the manifestation of new physics, which is very unlikely for the current accuracy of experimental measurements and theoretical calculations, then this discrepancy could be blamed on systematic errors in experimental data, theoretical uncertainties in calculations of strong interactions at low energy, or it might be that DDH approach is not adequate for the description of the set of precise experimental data because it is based on a number of models and assumptions.…”