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Neutrino Experiment Restores Standard Model Symmetry

Posted by kdawson on from the eightfold-way dept.

perturbed1 writes "A Fermilab press release announced that MiniBooNE's latest results have salvaged the Standard Model of particle physics. The experiment ruled out the simple neutrino oscillation interpretation of the 1990s LSND experiment. Neutrinos have a tiny amount of mass, required by their oscillations, as observed in solar, atmospheric, and reactor neutrino experiments. Combining this mass with the LSND experiment's results required the presence of a fourth but 'sterile' neutrino, breaking the 3-fold symmetry of particle families in the standard model." Nice to see some good news out of Fermilab after the CERN debacle.

2 of 83 comments (clear)

  1. NOT good news! by YA_Python_dev · · Score: 4, Insightful

    This isn't exactly what most scientist would consider "good news". We already know that both the standard model and the general relativity are wrong or at least incomplete, but they continue to pass every experiment, including this one...

    The reason they keep trying is because they hope to finally find something different from what those theories predict: this will probably open a very exciting period of progress for our understanding of the universe.

    More infos: start from unsolved problems in physics and click links.

    --
    There's a hidden treasure in Python 3.x: __prepare__()
    1. Re:NOT good news! by mstahl · · Score: 4, Insightful

      We already know that both the standard model and the general relativity are wrong or at least incomplete, but they continue to pass every experiment

      (Emphasis mine). If that's true, then how do we "already know" that the standard model and GR are broken? The way that we tell if a theory is broken is by experimentation.

      I know you're probably talking about the whole dark matter/energy debate, but neither of those means general relativity is broken, necessarily. They could be indications that general relativity needs some elaboration or, most likely, there exists circumstances where we can experimentally show it to be broken (i.e., not just by observing cosmology from afar but actually in a lab). If we haven't found those circumstances yet, experimentation is how we keep looking. The good news of this article is that one experiment's results, which if accepted would have required major rewriting of theories, were not reproducible. We're one step closer to explaining them.