Seminar Details

Nuclear Structure and Double-Beta Decay

Jon Engel, University of North Carolina
Tuesday, October 1, 1:45 PM - NSCL/HEP Joint Seminar
Biomedical & Physical Sciences Bldg., Rm. 1400

Several expensive experiments seek to determine the neutrino mass scale by measuring the rate of neutrinoless double-beta decay. The rate indeed depends on the mass scale but also depends on a nuclear matrix element that must be calculated. Current calculations are uncertain by factors of two or three at least. I describe recent theoretical work on several fronts to reduce the uncertainty. Developments in effective field theory, in ab initio nuclear structure, and in nuclear density-functional theory promise significantly more accurate matrix elements in the near future.