I’m not a neutrino physicist, so I couldn’t give you very good information, but a blog entry by a guest writer for Cosmic Variance provides a pretty good description of what exactly is going on. Fascinating stuff, truly.

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Linked here is MiniBooNE’s published first results, the MiniBooNE website, and from there is a variety of discussions about neutrino physics. The content ranges in level from a neutrino physicist down to the interested layperson.