CERN recently announced (http://cds.cern.ch/record/2140095/) a null result for the X(5568) tetraquark which Fermilab has announced (http://arxiv.org/abs/1602.07588) it discovered with a statistical significance of 5.1sigma. This is very disturbing to me. Why is this? I am not an expert on particle physics but at first sight the only difference between the two experiments appears to be that the Fermilab collision experiment involved protons and antiprotons and the CERN experiment was pp collisions. What's up at CERN? Is the Fermilab data bogus? Could it be that X(5568) only comes forth in proton-antiproton collisions?