Particles, Astrophysics, and Nuclear Physics Seminar

Tritium End-Point Behavior Suggests a Tachyonic Neutrino: What Should We Do About It?

Professor Ngee-Pong Chang
Dept. of Physics
City College of New York

Analyses of Tritium decay spectrum at the end-point have shown hints of a negative mass-squared for the neutrino. If so, it implies that the neutrino is a tachyon. How can we be sure of this empirical conclusion?

Prior estimates of a tachyonic spectrum have included only stable modes with 3-momentum > (tachyonic) mass. But a tachyon has unstable modes with 3-momentum < mass. How do they affect the end-point spectrum?

I report on a full study of the tritium decay in the light of a tachyonic neutrino, and show how the transient modes `fill up' the end-point spectrum.

Monday, April 4, 2005
2:00 PM
Gant Science Complex
Physics Department
Room P121

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