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How was the top quark discovered at Fermilab?

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subatomic particle The Large Hadron Collider (LHC), the world's most powerful particle accelerator. At the LHC, located underground in Switzerland, physicists study subatomic particles.

The discovery of the top quark at the Fermi National Accelerator Laboratory (Fermilab) was a landmark achievement that completed the set of three pairs of quarks required by the Standard Model.12

Because the top quark is exceptionally massive—roughly as heavy as a lead nucleus—previous attempts to detect it had failed. Its discovery required the immense energy provided by Fermilab’s Tevatron, which collided protons and antiprotons at a total energy of 1.8 teraelectron volts (TeV).1

The process unfolded in two stages:
* Initial Evidence: In April 1994, the team working on the Collider Detector Facility (CDF) announced tentative evidence for the particle's existence.1
* Confirmation: In 1995, the discovery was confirmed when both the CDF team and an independent group working on the DZero (D0) experiment published more convincing, corroborating evidence.12

These experiments established that the top quark has a mass of approximately 173.8 GeV, confirming its status as the heaviest known quark.12