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Nature 391, 123-124 (8 January 1998) | doi:10.1038/34289

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Particle physics:  Neutrino deficit challenges conservation laws

Frank Wilczek1

SuperKamiokande is a modern wonder of the world: 50,000 m3 of purified water surrounded by giant phototubes looking out for Cerenkov radiation, the shock waves of light left behind by 'superluminal' particles. (I speak here not of the hypothetical and dubious tachyons, but of ordinary particles boosted to high energy, which outrace light through water even though their speed is less than that of light in a vacuum.

  1. Frank Wilczek is in the School of Natural Sciences, Institute for Advanced Study, Olden Lane, Princeton, New Jersey 08540, USA.
    e-mail: Email: wilczek@ias.edu