David Dunsky (LBNL) “Dark Radiation Constraints on Heavy QCD Axion Theories”
HYBRID 50A-5132 (Sessler Conference Room), https://lbnl.zoom.us/j/91782268585 50A-5132Abstract: The explicit breaking of the PQ symmetry by higher dimensional operators can spoil the dynamical relaxation of the strong CP angle to its minimum of zero. One solution to this PQ “quality problem” is to introduce heavy QCD axions. …
David Dunsky (LBNL) “Dark Radiation Constraints on Heavy QCD Axion Theories” Read More »