Pauli Exclusion Principle – Understanding Its Role in Antimatter

Question

Have the Pauli exclusion principle been proven to apply to antimatter experimentally?

Answer 1

While CERN has created anti-hydrogen, there has never been a synthesized multi-antielectron anti-atom. So there has never been a large enough anti-atom (antinucleons with antielectrons) to experimentally test the PEP for antimatter.

But the Pauli exclusion principle applies to all spin $\frac{1}{2}$ particles (all fermions) and one would be shocked that in anti-atoms containing several anti-electrons, the PEP was not obeyed.