Speaker
Dalibor Zakoucky
(Nuclear Physics Institute of ASCR)
Description
The Standard Model as a very succesful theory of electroweak interactions postulates the basic assumption about the pure "V(ector)-A(xial vector)" character of the interaction. Nevertheless, even after more than half a century of development of the model and experimental testing of its fundamental ingredients, experimental data still rule out the existence of other types of weak interactions (scalar, tensor) only at the ~8% level.
A new project at ISOLDE/CERN to search for these forbidden components of weak interactions (or at least significantly improve their current experimental limits) WISARD is being prepared. Experimental setup WISARD online on the beam of isotope separator ISOLDE plans to probe the existence of scalar currents in the weak interactions via the study of β-delayed protons emitted in the decay of 32Ar. High precision measurement of the Doppler effect on the protons emitted from the moving recoil nuclei after the β –decay of 32Ar carries information about β- angular correlations (different for a scalar current compared to the dominant vector current).
Current status of the WISARD setup and first results of the commissioning runs will be presented.
Primary author
Dalibor Zakoucky
(Nuclear Physics Institute of ASCR)
