Opportunities and Open Questions in Modern Beta Decay
Abstract
For well over half a century, precision studies of neutron and nuclear β decays have been at the forefront of searches for exotic electroweak physics. Recent advances in nuclear ab initio theory and the widespread use of effective field theories mean that the modern understanding of β decay is going through a transitional phase. This has been propelled by current tensions in the global dataset leading to renewed scrutiny of the theoretical ingredients. In parallel, novel techniques and methods are being investigated that can sidestep many traditional systematic uncertainties and require a diverse palette of skills and collaboration with material science and condensed matter physics. This review highlights the current opportunities and open questions to facilitate the transition to a more modern understanding of β decay.
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