Both the antineutron and the proton are soups of gluons and virtual quarks of all kinds surrounding the three valence quarks Dreaded_Anomaly mentions; all of which interact by the strong force. The result is exceedingly intractable. Almost anything that doesn’t actually violate a conservation law can come out of this collision. The most common case, nonetheless, is pions—lots of pions.
This is also the most common outcome from neutron-proton and neutron-antiproton collisions; the underlying quark interactions aren’t all that different.
Very complicated things.
Both the antineutron and the proton are soups of gluons and virtual quarks of all kinds surrounding the three valence quarks Dreaded_Anomaly mentions; all of which interact by the strong force. The result is exceedingly intractable. Almost anything that doesn’t actually violate a conservation law can come out of this collision. The most common case, nonetheless, is pions—lots of pions.
This is also the most common outcome from neutron-proton and neutron-antiproton collisions; the underlying quark interactions aren’t all that different.