Physics Seminar

DATE: 2004-04-27 16:00 - 17:00
PLACE: Seminar Hall in 4th Building
TITLE: NEUTRINO MASSES AND MIXING: NEW SYMMETRY OF NATURE?
CONTACT: Physics Seminar Organizer
SPEAKER: Dr. Alexei Smirnov  (International Centre for Theoretical Physics Trieste, Italy and Institute for Nuclear Research of Russian Academy of Sciences,Moscow, Russia Centre)
LANGUAGE: English
URL: http://seminar.kek.jp/physics
ABSTRACT: Results on neutrino masses and lepton mixing will be summarized. The key issues are maximal or near maximal 2-3 mixing, relation of the 1-2 mixings in quark and lepton sector, smallness of the 1-3 mixing and a possibility of the quasi-degenerate neutrino mass spectrum. The questions on the way to underlying physics will be addressed: do the neutrino results imply new symmetry of nature? Is the quark-lepton symmetry realized at some level? Some results of the ``No-symmetry'' approach will be presented.

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