Bulletin of the American Physical Society
81st Annual Meeting of the APS Southeastern Section
Volume 59, Number 18
Wednesday–Saturday, November 12–15, 2014; Columbia, South Carolina
Session DA: Neutron Physics |
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Chair: Nadia Fomin, University of Tennessee Room: Richland III |
Thursday, November 13, 2014 1:15PM - 1:51PM |
DA.00001: Searches for the neutron electric dipole moment (nEDM) Invited Speaker: Paul Huffman The discovery of a non-zero neutron electric dipole moment (nEDM) would provide evidence for a new type of CP violation. Such a discovery would shed light on the fundamental question of why there now more visible matter than antimatter in the universe. Failure to observe a non-zero nEDM however will still constrain many versions of beyond the Standard Model physics, including minimal supersymmetry. I will provide an overview of current experimental techniques, review the world-wide status of experimental searches, and focus on the specifics of an experiment that is being developed to run at the Spallation Neutron Source at ORNL that offers a factor of about 100 increase in sensitivity over existing measurements. [Preview Abstract] |
Thursday, November 13, 2014 1:51PM - 2:27PM |
DA.00002: Neutron Beta Decay: present efforts and a look into the future Invited Speaker: Jonathan Mulholland The decay of the free neutron is the archetypal charged current semi-leptonic weak process. As such, experimental investigation of the decay process through lifetime and decay correlation measurements provide insight into a wide variety of physics, ranging from fundamental interactions to the formation of the early Universe. The neutron lifetime is a crucial parameter for determining primordial element abundance. Decay correlations are necessary for tests of CKM matrix unitarity, which could be the point of discovery for physics beyond the standard model. Context and physical motivation for the study of free neutron decay will be provided, followed by a discussion of the status of the field and plans for future measurements. [Preview Abstract] |
Thursday, November 13, 2014 2:27PM - 3:03PM |
DA.00003: Low Energy Few Body Hadronic Parity Violation Invited Speaker: Jared Vanasse Hadronic parity-violation offers a unique probe of QCD since it is sensitive to the interplay between QCD at hadronic scales and the short distance weak interaction. At low energies these interactions manifest themselves as interactions between nucleons and are described by five low energy constants. The current goal in hadronic parity-violation is to cleanly extract these constants from experiments using new theoretical tools such as pionless effective field theory. In this talk I will discuss the calculation of parity-violating observables for few-body nuclear systems in pionless effective field theory and the prospect of current and future experiments to extract the five low energy constants using these theoretical calculations. [Preview Abstract] |
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