Studying discrete symmetry violation in neutron-nucleus system

Okudaira, Takuya

The technology development section carries out the development of the neutron polarization device. Polazied neutrons are used frequently in the experiment of the particle physics. Therefore. it is necessary to cooperate with the scientists in particle physics for further developments. The matter-dominated universe cannot be explained by the standard model, and searches for new physics are carried out in the world. One of the ways is a measurement of symmetry violation using polarized neutrons and nuclei. For example, experiments to measure parity violation using the polarized neutrons and light nuclei are conducted to search for the unknown physics in quark-quark interaction. The unknown time reversal violation can be enhanced in La(n, ) with polarized neutrons, and the fundamental study to search for T-violation is ongoing using MLF. We will present the overview of the experiments for symmetry violation using polarized neutrons and the neutron polarization device.