Neutrons have been a useful probe in many fields of science as well as an important physical system for study in themselves. Modern neutron sources provide extraordinary opportunities to study a wide variety of physics topics. Among them is a detailed study of the weak interaction. An overview of studies of the hadronic weak (quark-quark) as well as semi-leptonic (quark-lepton) interactions at the Spallation Neutron Source (SNS) will be presented. These measurements, done in few-nucleon systems are finally letting us gain knowledge of the hadronic weak interaction without the contributions from nuclear effects. Two such measurements, NPDGamma and the n + ^3He experiment, were recently completed on the Fundamental Neutron Physics Beamline at the SNS. Experimental approaches will be described, results presented and future possibilities discussed.
Online via ZOOM:
Meeting ID: 984 5733 2925
Peter Thirolf (LMU) / Norbert Kaiser (TUM)