Isolated quarks were first observed in
A) 1938.
B) 1955.
C) 1976.
D) 2012, with the discovery of the Higgs boson.
E) Isolated quarks have not been observed.

Question

Quizplus · Accepted Answer

Isolated quarks have not been observed due to a phenomenon known as color confinement, which prevents them from being isolated under normal conditions. They are always found in groups (hadrons), such as in protons and neutrons.

Isolated Quarks Were First Observed in