Dieter Haidt (born 1940) is a German physicist, known for his contribution to the 1973 discovery of weak neutral currents.
[1][2] The discovery was made in the Gargamelle experiment, which used a heavy liquid bubble chamber detector in operation at CERN from 1970 to 1979.
[7] The collaboration searched for weak neutral currents in neutrino reactions without muon generation.
The discovery's rapid recognition depended, to a considerable extent, on calculations by Haidt, who showed that the existence of weak neutral currents was a new type of effect (and not, e.g., interactions between neutrons).
[2][4] Other prominent physicists involved in the Gargamelle experiment include Antonino Pullia (1935–2020), Helmut Faissner (1928–2007), and André Lagarrigue (1924–1975).