## Nadia Fomin Los Alamos National Laboratory 3:30 PM, Monday February 18, 2013, FFSC 2237

### Nuclear and Particle Physics with Cold Neutrons

Neutrons have been a useful probe in many fields of science as well an an important physical system for study in themselves. Modern neutron sources provide extraordinary opportinites to study a wide variety of physics topics. Among them is a detailed study of the weak interaction. In this talk, I will present an overview of studies of the hadronic weak (quark-quark) as well as semi-leptonic (quark-lepton) interactions. In addition, I will describe the progress of the NPDGamma experiment, which, due to the simplicity of the neutron, will provide an unambiguous measurement of the key weak coupling (often referred to as $f_{\pi}$), which will finally test the theoretical predictions.

Coffee and cookies before the presentation at 3:15 pm, and refreshments after the presentation will both be served outside FFSC 2237.