Physics Colloquium

"Weighing Neutrinos, Then and Now"

Presented by Prof. Joe Formaggio, MIT

Tuesday, April 4, 2023, 3:30 pm — Large Seminar Room, Bldg. 510

Please note that coffee and cookies will be served at 3:00pm in the seminar lounge.

Abstract: The turn of the 21st century witnessed a sudden shift in our fundamental understanding of particle physics. While the minimal Standard Model predicts that neutrino masses are exactly zero, the discovery of neutrino oscillations proved the Standard Model wrong. Neutrino oscillation measurements, however, shed light neither on the scale of neutrino masses, nor on the mechanism by which those are generated. The neutrino mass scale is most directly accessed by studying the energy spectrum generated by beta decay or electron capture — a technique dating back to Enrico Fermi's formulation of radioactive decay. I will review the methods and techniques aimed at measuring neutrino masses kinematically, with a focus on recent experimental developments that have emerged in the past decade. Finally, we provide an outlook of what future experiments might be able to achieve.

Hosted by: David Jaffe

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