A5103193261- Atomic and Subatomic Physics Research
- Particle physics theoretical and experimental studies
- Quantum, superfluid, helium dynamics
- Neutrino Physics Research
- Nuclear Physics and Applications
- Dark Matter and Cosmic Phenomena
- Cold Atom Physics and Bose-Einstein Condensates
- Radioactive Decay and Measurement Techniques
- Particle Detector Development and Performance
- Nuclear reactor physics and engineering
- Advanced NMR Techniques and Applications
- Scientific Measurement and Uncertainty Evaluation
University of Virginia
2017-2019
Indiana University Bloomington
2016
Neutron beta decay is one of the most fundamental processes in nuclear physics and provides sensitive means to uncover details weak interaction. can evaluate ratio axial-vector vector coupling constants standard model, λ = g A / V , through multiple correlations. The Nab experiment will carry out measurements electron-neutrino correlation parameter a with precision δ 10 −3 Fierz interference term b 3 × unpolarized free neutron decay. These results, along more precise measurement lifetime,...
The Nab experiment will measure the correlation a between momenta of beta particle and antineutrino in neutron decay as well Fierz term b which distorts spectrum.
The Nab collaboration will study free neutron beta decay at the Spallation Neutron Source Oak Ridge National Lab. A decays into a proton, an electron and anti-neutrino in this process, where energy of outgoing protons electrons are collected to determine (1) electron-antineutrino correlation co-efficient $a$ precision |$\Delta a/a$|<=$10^{-3}$ (2) Fierz interference term $b$ b/b$|<=$3*10^{-3}$. From measurement $a$, we can calculate axial-vector vector coupling ratio $\lambda$. Together with...
The current three sigma tension in the unitarity test of Cabbibo-Kobayashi-Maskawa (CKM) matrix is a notable problem with Standard Model elementary particle physics. A long-standing goal study free neutron beta decay to better determine CKM element V ud through measurements lifetime and correlation parameter. Nab collaboration intends measure , neutrino-electron correlation, accuracy sufficient for competitive evaluation based on data alone. This paper gives status report an outlook.