Jack Steinberger (born 25.05.1921) - an American experimental physicist, a member of the National Academy of Sciences (1966). Born in Germany. Graduated from the University of Chicago (1942). He worked at the Institute for Advanced Study in Princeton (1948—49) and at the University of California at Berkeley (1949-50). In 1950-71 he was professor at Columbia University. Since 1968 he has also worked at CERN.
His work concerned muon and pion physics and elementary particle physics. Carried out early studies of the photoproduction of charged mesons and the first experiments on the production of charged mesons on protons. In 1950 — 52, together with W. Panofsky, he was the first to measure the spin and parity of pions, reliably confirmed the existence of the neutral pion, determined its photoproduction cross section, detected the direct decay π → e + v, and proved experimentally the existence of the reaction π- + D → 2N. Measured the mean lifetime of the π-meson. In 1956, together with others, he discovered the minus-sigma hyperon, and in 1962, together with L. Lederman and M. Schwartz, he proved experimentally the existence of two types of neutrino—the electron and the muon.
A member of the Heidelberg Academy of Sciences (1967) and the American Academy of Arts and Sciences (1969).
His work concerned muon and pion physics and elementary particle physics. Carried out early studies of the photoproduction of charged mesons and the first experiments on the production of charged mesons on protons. In 1950 — 52, together with W. Panofsky, he was the first to measure the spin and parity of pions, reliably confirmed the existence of the neutral pion, determined its photoproduction cross section, detected the direct decay π → e + v, and proved experimentally the existence of the reaction π- + D → 2N. Measured the mean lifetime of the π-meson. In 1956, together with others, he discovered the minus-sigma hyperon, and in 1962, together with L. Lederman and M. Schwartz, he proved experimentally the existence of two types of neutrino—the electron and the muon.
A member of the Heidelberg Academy of Sciences (1967) and the American Academy of Arts and Sciences (1969).