If everything was as expected, we don't, but the issue is that there appears to be something different about the particles coming from the accelerator (sterile

If everything was as expected, we don't, but the issue is that there appears to be something different about the particles coming from the accelerator (sterile neutrinos? or simply shorter distance?) since these results haven't been seen in other experiments. Of course the fact that the results could be separately replicated (and combined to give the 6sigma confidence) is another useful aspect. If there are sterile neutrinos... they are a possible dark matter particle.