The production process of quark
Quarks are produced 10-10 seconds after the universe is created, when the temperature of the universe has dropped below 100GeV, which is the threshold for generating paired W and Z particles. Since that time, the W and Z particles have taken on the task of weak interaction between particles and will not exist alone, except where they are generated (ephemeral). About 10-6 ~ 10-3 seconds after the birth of the universe, its temperature drops to the point that the quark no longer has enough energy to roam freely, but two or three are bound together. About 1 microsecond after the birth of the universe, the available energy is less than a few hundred TeV, and quarks and antiquarks condense into baryons and antibaryons. The quark plasma phase ends 10-4 seconds after the origin of the universe.
