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jan 1, 1974 - J/ψ meson

Description:

discovered by groups headed by Burton Richter and Samuel Ting, demonstrating the existence of the charm quark (proposed by James Bjorken and Sheldon Lee Glashow in 1964)

Added to timeline:

Particle discoveries

ByIanG
27 Nov 2017

Date:

jan 1, 1974
Now
~ 50 years ago
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