Stephen Weinberg (1933-2021)

Theoretical physicist Steven Weinberg passed away on July 23 at the age of 88.

In 1967, Weinberg published a brief two and a half page paper in Physical Review Letters, ‘A Model of Leptons’. This paper, Weinberg managed to demonstrate that the electromagnetic and weak nuclear forces were different manifestations of the same underlying interaction, separating out into different forces as the universe cooled via a symmetry breaking process.

An important prediction of this new electroweak theory was the existence of weak neutral current processes, mediated by the Z boson, a prediction which was experimentally validated in 1973 by the Gargamelle experiment at CERN. For this discovery, Weinberg shared the 1979 Nobel Prize in Physics with Sheldon S. Glashow and Abdus Salam.

Obituary by Frank Wilczek | Nature

Obituary by John Preskill and others | Physics Today

Nobel Prizes: to Glashow, Salam and Weinberg for Physics… | Physics Today

The Nobel Prize in Physics 1979 | The Nobel Foundation

The Discovery of Weak Neutral Currents | CERN Courier

Gargamelle | Wikipedia

Forty years of neutral currents | CERN Courier

Gargamelle: the tale of a giant discovery | CERN Courier

Twenty-five years of neutral currents | CERN Courier

About Glen Mark Martin

MCSE-Messaging. Exchange Administrator at the University of Texas at Austin. Unrepentant armchair physicist.
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