New precision measurements of free neutron beta decay with cold neutrons
S. Bae{\ss}ler, J.D. Bowman, S. Penttil\"a, D. Po\v{c}ani\'c
TL;DR
This paper discusses a planned high-precision experiment to measure free neutron beta decay using cold neutrons at Oak Ridge, aiming to test the Standard Model and determine decay coupling constants.
Contribution
It introduces a new experimental program at the Spallation Neutron Source for precise neutron beta decay measurements, contextualizing it within recent and upcoming research efforts.
Findings
Design of a new measurement setup at Oak Ridge
Expected improvements in coupling constant precision
Potential to identify deviations from Standard Model predictions
Abstract
Precision measurements in free neutron beta decay serve to determine the coupling constants of beta decay, and offer several stringent tests of the Standard Model. This paper describes the free neutron beta decay program planned for the Fundamental Physics Beamline at the Spallation Neutron Source at Oak Ridge National Laboratory, and puts it into the context of other recent and planned measurements of neutron beta decay observables.
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