This conference celebrated the discovery of neutral currents in neutrino interactions twenty years ago. History will mark the 1973 decisive experiments as the turning point of a new era in theoretical and experimental physics. The participants in the discovery retrace its circumstances and genesis, and all the present aspects of its heritage are reviewed: particle physics (the standard model has to date not been invalidated by the most precise experiments at LEP), atomic physics and astrophysics.

This conference celebrated the discovery of neutral currents in neutrino interactions twenty years ago. History will mark the 1973 decisive experiments as the turning point of a new era in theoretical and experimental physics. The participants in the discovery retrace its circumstances and genesis, and all the present aspects of its heritage are reviewed: particle physics (the standard model has to date not been invalidated by the most precise experiments at LEP), atomic physics and astrophysics.