Future directions in nuclear $β$ decay at FRIB and beyond

Garrett B. King; Ayala Glick-Magid; Grigor Sargsyan; Mark A. Caprio; Kyle G. Leach; John A. Behr; Francesca Bonaiti; Maxime Brodeur; Graham Chambers-Wall; Heather L. Crawford; Maria Dawid; Wouter Dekens; Michael Gennari; Robert Grzywacz; Peter Gysbers; Heather S. Harrington; Heiko Hergert; Lotta Jokiniemi; Brenden Longfellow; Rebeka S. Lubna; Kelsey A. Lund; Giacomo Marocco; Anna E. McCoy; Dan Melconian; Alexis Mercenne; David C. Moore; Oscar Naviliat-Cuncic; Samuel J. Novario; Timilehin H. Ogunbeku; Walter C. Pettus; Ryan Plestid; Bertis C. Rasco; Ante Ravlíc; Yukiya Saito; Dustin P. Scriven; Chien-Yeah Seng; Nadezda A. Smirnova; Artemis Spyrou; Vandana Tripathi; Xing Wu; Zhengyu Xu

arXiv · 2607.22983

Future directions in nuclear $β$ decay at FRIB and beyond

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Abstract

Motivated by the opportunities presented for studies relevant to nuclear structure, astrophysics, and fundamental symmetries with nuclear $β$ decay, the Facility for Rare Isotope Beams (FRIB) Theory Alliance topical program ``Future Directions in Nuclear $β$ Decays at FRIB'' was held in September of 2025. This white paper summarizes the main points of discussion over the two-week program, and it aims to provide a snapshot of the current status of the field while also highlighting important questions and opportunities for future work. We provide an overview of the experimental tools and techniques that enable modern $β$ decay studies, discuss the current state of nuclear many-body approaches used to study $β$ decays, and highlight the important science questions that can be addressed by weak decays.

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Garrett B. King, Ayala Glick-Magid, Grigor Sargsyan, Mark A. Caprio, Kyle G. Leach, John A. Behr, Francesca Bonaiti, Maxime Brodeur, Graham Chambers-Wall, Heather L. Crawford, Maria Dawid, Wouter Dekens, Michael Gennari, Robert Grzywacz, Peter Gysbers, Heather S. Harrington, Heiko Hergert, Lotta Jokiniemi, Brenden Longfellow, Rebeka S. Lubna, Kelsey A. Lund, Giacomo Marocco, Anna E. McCoy, Dan Melconian, Alexis Mercenne, David C. Moore, Oscar Naviliat-Cuncic, Samuel J. Novario, Timilehin H. Ogunbeku, Walter C. Pettus, Ryan Plestid, Bertis C. Rasco, Ante Ravlíc, Yukiya Saito, Dustin P. Scriven, Chien-Yeah Seng, Nadezda A. Smirnova, Artemis Spyrou, Vandana Tripathi, Xing Wu, Zhengyu Xu. 2026-07-25. Future directions in nuclear $β$ decay at FRIB and beyond. https://arxiv.org/abs/2607.22983

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