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Relativistic corrections to the nuclear Schiff moment
Parity and time invariance violating (-odd) atomic electric dipole
moments (EDM) are induced by interaction between atomic electrons and nuclear
-odd moments which are produced by -odd nuclear forces. The nuclear
EDM is screened by atomic electrons. The EDM of a non-relativistic atom with
closed electron subshells is induced by the nuclear Schiff moment. For heavy
relativistic atoms EDM is induced by the nuclear local dipole moments which
differ by 10-50% from the Schiff moments calculated previously.
We calculate the local dipole moments for and where the most accurate atomic and molecular EDM measurements have been
performed.Comment: 3 pages, no figures, brief repor
Angular distributions in decays
The differential decay rates of the processes and
close to the threshold are calculated with
the help of the optical potential. The same calculations are made
for the decays of . We use the potential which has been suggested to
fit the cross sections of scattering together with and
six pion production in annihilation close to the
threshold. The invariant mass spectra is in agreement with the
available experimental data. The anisotropy of the angular distributions, which
appears due to the tensor forces in the interaction, is predicted
close to the threshold. This anisotropy is large enough to be
investigated experimentally. Such measurements would allow one to check the
accuracy of the model of interaction.Comment: 10 pages, 8 figure
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