Sheldon Lee Glashow (US: /ˈɡlæʃoʊ/,[1][2] UK: /ˈɡlæʃaʊ/;[3] born December 5, 1932) is a Nobel Prize-winning American theoretical physicist.

Sheldon Glashow was born on December 5, 1932, in New York City, to Jewish immigrants from Russia, Bella (née Rubin) and Lewis Gluchovsky, a plumber.

[5] In 1961,[9] Glashow extended electroweak unification models due to Schwinger by including a short range neutral current, the Z0.

The resulting symmetry structure that Glashow proposed, SU(2) × U(1), forms the basis of the accepted theory of the electroweak interactions.

Their theory qualitatively predicted the general pattern of coupling constant running, with plausible assumptions, it gave rough mass ratio values between third generation leptons and quarks, and it was the first indication that the law of Baryon number is inexact, that the proton is unstable.

[13] About ten minutes into "String's the Thing", the second episode of The Elegant Universe TV series, he describes superstring theory as a discipline distinct from physics, saying "...you may call it a tumor, if you will...".