Conversation so far:
in the big bang which particles formed first
The quarks and leptons were amongst the first particles to appear in the big bang.
What is a quark?
A quark is a type of elementary particle and a fundamental constituent of matter.
What is a lepton?
In particle physics, a lepton is an elementary particle of half-integer spin that does not undergo strong interactions.
What is half-integer spin?
In particle physics, a fermion is a particle that follows Fermi–Dirac statistics and generally has half odd integer spin 1/2, 3/2 etc.

Question: can you tell me about the statistics
Self-contained rewrite: What is Fermi-Dirac statistics?