Oak Ridge National Laboratory

Physics Division

Physics Division Seminars

Physics Division Seminars bring us speakers on a variety of physics related subjects. Usually these are held in the Building 6008 large Conference Room, at 3:00 pm on the chosen day, but times and locations may vary. For more information, contact our seminar chairman,

Alfredo Galindo-Uribarri
Tel (Office): (865) 574-6124  (FAX): (865) 574-1268


Fri., August 22, 2003, at 10:30 p.m.

Double Beta Decay: The Next Frontier in Neutrino Physics?

Andreas Piepke, University of Alabama, Tuscaloosa, AL
Building 6008, Conference Room

The exploration of neutrino mass has long been recognized as a powerful probe for new physics beyond the well established Standard Model of the Electro-Weak Interaction. Experiments searching for Neutrino Oscillations have, quite convincingly, demonstrated the existence of this effect, and therefore of finite neutrino mass, using a variety of different techniques. The natural question arises: what's next? While oscillation experiments are well suited to precisely map the neutrino mixing matrix they are, on the other hand, only sensitive to the differences of the squared neutrino masses, and therefore fundamentally unsuited to determine the absolute neutrino mass. The exploration of the neutrino-less double decays and kinematic neutrino mass tests are currently our most sensitive tools to answer this question. In addition double beta decay is closely related to the, yet unknown, behavior of neutrinos under CP-conjugation and the conservation of the Lepton number. __ In my talk I will put the goals of a new generation of double beta decay searches into the perspective of the oscillation experiments. A subjective selection of these projects will be discussed, along with the experimental challenges and anticipated results.

Refreshments will be served at 10:10 a.m.