born Dec. 5, 1932, New York, N.Y., U.S.
U.S. theoretical physicist.
He joined the faculty at Harvard University in 1967. With Steven Weinberg (b. 1933) and Abdus Salam (19261996), he received a 1979 Nobel Prize for formulation of the electroweak theory , unifying electromagnetism and the weak force . In extending the early, limited theory of Weinberg and Salam to include more classes of elementary particles, he had to invent an important new property ( charm ) for quark s.