Arthur packets for G₂ over p-adic fields

We describe Arthur packets for the split reductive group G₂ over a p-adic field and compute their stable and endoscopic character distributions. The construction uses the twisted Aubert duality recently studied by Cheng--Kaletha. We identify the corresponding Xu packets on PGSO₈ and their triality-twisted characters. We also extend the result to long-root and short-root Arthur packets corresponding to unitary generic representations of PGL₂.