Michigan Technological University
Department of Physics

is pleased to announce a colloquium

with

Mark Chen

Solving the Solar Neutrino Problem with the Sudbury Neutrino Observatory

A thirty-year old puzzle in physics and astrophysics has been solved! Solar neutrino flavor transformations have been observed by the Sudbury Neutrino Observatory (SNO). SNO is an ultra-low-background Cherenkov detector containing 1000 tonnes of pure heavy water, located in an active nickel mine near Sudbury, Canada. By observing charged-current and neutral-current neutrino-deuteron reactions, SNO has measured the flux of electron neutrinos and the total flux of all active neutrino flavors from the Sun. These results show that the deficit observed by previous solar neutrino experiments is due to new neutrino properties and that solar model neutrino flux calculations are correct

Thursday, January 16, 2003

4:00 p.m., Fisher 139

Refreshments will be served

MTU | Physics | Colloquium