Conveners
W3-3 Testing Fundamental Symmetries II (DNP/PPD/DTP) | Tests de symétries fondamentales II (DPN/PPD/DPT)
- Beatrice Franke (Queen's University)
We have measured the beta asymmetry with respect to the nuclear spin in 37K decay to be -0.5706+-0.0018. Ours is the most accurate beta asymmetry measurement in any nucleus or the neutron, and is in agreement with the Standard Model of particle physics. I will show our constraints on beyond-Standard Model physics complementary to other beta decay measurements. I will also describe our planned...
The ALPHA experiment at CERN was designed to test CPT symmetry through
comparisons of measurements of antihydrogen transition frequencies to those of
hydrogen. I will describe our recent result on the 1S to 2S transition in
antihydrogen. Then I will discuss a new experiment - ALPHA-g - which aims to
study the gravitational interaction between antihydrogen and the Earth.
The goal of the CERN-based ALPHA Collaboration is to examine the properties of the antihydrogen atom at the highest levels of precision possible [1], and thereby place constraints on any differences that might exist between antihydrogen and normal matter counterpart, hydrogen. These comparisons are expected to provide stringent tests of CPT symmetry, which is one of the cornerstones upon which...
During the fall of 2016, the ultracold neutron (UCN) collaboration at TRIUMF conducted a number of tests for the cold neutron (CN) source commissioning. Maximizing the resultant CN flux through this source is imperative to producing the world’s highest density of UCN. This is necessary in order to increase the sensitivity of the measured neutron electric dipole moment (nEDM) by an order of...
The TRIUMF nEDM experiment aims to constrain the neutron’s electric dipole moment by an order magnitude over the current sensitivity. The experiment employs a magnetically shielded Ramsey Resonance based EDM apparatus employing ultracold neutrons from a spallation based superfluid helium UCN source, currently under construction at TRIUMF. In our experiment, inhomogeneities (gradients) and...
