New physics searches in nuclear and neutron β decay

M González-Alonso, O Naviliat-Cuncic… - Progress in Particle and …, 2019‏ - Elsevier
The status of tests of the standard electroweak model and of searches for new physics in
allowed nuclear β decay and neutron decay is reviewed including both theoretical and …

Probing exotic phenomena at the interface of nuclear and particle physics with the electric dipole moments of diamagnetic atoms: A unique window to hadronic and …

N Yamanaka, BK Sahoo, N Yoshinaga, T Sato… - The European Physical …, 2017‏ - Springer
The current status of electric dipole moments of diamagnetic atoms which involves the
synergy between atomic experiments and three different theoretical areas, ie particle …

New result for the neutron -asymmetry parameter from UCNA

MAP Brown, EB Dees, E Adamek, B Allgeier, M Blatnik… - Physical Review C, 2018‏ - APS
Background: The neutron β-decay asymmetry parameter A 0 defines the angular correlation
between the spin of the neutron and the momentum of the emitted electron. Values for A 0 …

Performance of the upgraded ultracold neutron source at Los Alamos National Laboratory and its implication for a possible neutron electric dipole moment experiment

TM Ito, ER Adamek, NB Callahan, JH Choi, SM Clayton… - Physical Review C, 2018‏ - APS
The ultracold neutron (UCN) source at Los Alamos National Laboratory (LANL), which uses
solid deuterium as the UCN converter and is driven by accelerator spallation neutrons, has …

Precision measurement of the neutron -decay asymmetry

MP Mendenhall, RW Pattie Jr, Y Bagdasarova… - Physical Review C …, 2013‏ - APS
A new measurement of the neutron β-decay asymmetry A 0 has been carried out by the
UCNA Collaboration using polarized ultracold neutrons (UCNs) from the solid deuterium …

values of the mirror transitions and the weak-magnetism-induced current in allowed nuclear decay

N Severijns, L Hayen, V De Leebeeck… - Physical Review C, 2023‏ - APS
The precision of correlation measurements in neutron and nuclear β decay has now
reached the level of about 1% and better. At this level of precision, higher-order corrections …

Precision Measurement of the Asymmetry in Spin-Polarized Decay

B Fenker, A Gorelov, D Melconian, JA Behr… - Physical Review Letters, 2018‏ - APS
Using Triumf's neutral atom trap, Trinat, for nuclear β decay, we have measured the β
asymmetry with respect to the initial nuclear spin in K 37 to be A β=-0.5707 (13) syst (13) stat …

Improved limits on Fierz interference using asymmetry measurements from the Ultracold Neutron Asymmetry (UCNA) experiment

X Sun, E Adamek, B Allgeier, Y Bagdasarova… - Physical Review C, 2020‏ - APS
The Ultracold Neutron Asymmetry (UCNA) experiment was designed to measure the β-
decay asymmetry parameter, A 0, for free neutron decay. In the experiment, polarized …

Comparison of ultracold neutron sources for fundamental physics measurements

G Bison, M Daum, K Kirch, B Lauss, D Ries… - Physical Review C, 2017‏ - APS
Ultracold neutrons (UCNs) are key for precision studies of fundamental parameters of the
neutron and in searches for new charge-parity-violating processes or exotic interactions …

Search for dark matter decay of the free neutron from the UCNA experiment:

X Sun, E Adamek, B Allgeier, M Blatnik, TJ Bowles… - Physical Review C, 2018‏ - APS
It has been proposed recently that a previously unobserved neutron decay branch to a dark
matter particle (χ) could account for the discrepancy in the neutron lifetime observed in …