[1] He was born in Roanne, in the Loire department in central France, on 4 May 1923, and died in Bures-sur-Yvette (Essonne), in the Île-de-France region, on 30 December 1999.
His name is associated with Michel parameters describing the phase space distribution of leptonic decays of charged leptons, the Bargmann–Michel–Telegdi equation describing spin evolution in a magnetic field,[2] and the Michel–Radicati theory for the SU(3) octet,[3][4] Michel completed his studies at the École Polytechnique in Paris.
Back in France, he was teaching in Lille and Orsay before creating the Centre de Physique Théorique of the École Polytechnique (CPHT) in Palaiseau.
Louis Michel was President of the Société Française de Physique between 1978 and 1980, and a member of the French Academy of Sciences since 1979.
[8] He supervised Claude Bouchiat on the first calculations on the influence of hadron pairs on the anomalous magnetic moment of the muon.