Fundamental Neutron Physics: a White Paper on Progress and Prospects in the US
R. Alarcon, A. Aleksandrova, S. Bae{\ss}ler, D. H. Beck, T., Bhattacharya, M. Blatnik, T. J. Bowles, J. D. Bowman, J. Brewington, L. J., Broussard, A. Bryant, J. F. Burdine, J. Caylor, Y. Chen, J. H. Choi, L., Christie, T. E. Chupp, V. Cianciolo, V. Cirigliano, S. M. Clayton, B.

TL;DR
This white paper reviews US progress in fundamental neutron physics, highlighting recent experimental and theoretical advances, and outlines future priorities to enhance US leadership in probing particle physics beyond the Standard Model.
Contribution
It provides a comprehensive overview of recent experimental results, theoretical developments, and future experimental plans in US fundamental neutron physics.
Findings
Most precise neutron lifetime measurement from UCNτ
Final beta-asymmetry results from UCNA
New data on hadronic parity violation from NPDGamma
Abstract
Fundamental neutron physics, combining precision measurements and theory, probes particle physics at short range with reach well beyond the highest energies probed by the LHC. Significant US efforts are underway that will probe BSM CP violation with orders of magnitude more sensitivity, provide new data on the Cabibbo anomaly, more precisely measure the neutron lifetime and decay, and explore hadronic parity violation. World-leading results from the US Fundamental Neutron Physics community since the last Long Range Plan, include the world's most precise measurement of the neutron lifetime from UCN, the final results on the beta-asymmetry from UCNA and new results on hadronic parity violation from the NPDGamma and n-He runs at the FNPB (Fundamental Neutron Physics Beamline), precision measurement of the radiative neutron decay mode and n-He at NIST. US leadership and…
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Taxonomy
TopicsAtomic and Subatomic Physics Research · Dark Matter and Cosmic Phenomena · Radiation Detection and Scintillator Technologies
