116 citations · 539 across the 21 of their papers we have counts for
25 papers
Competitive constraints on exotic tensor currents from ratios
Victor Dumenil, Leendert Hayen
We introduce the ratio of electron capture to positron decay rates of unstable nuclei as a probe for exotic tensor currents in the electroweak sector. We calculate nuclear structur…
Recoil spectroscopy as a Beyond Standard Model laboratory
Leendert Hayen
We consider the nuclear recoil spectrum following allowed decay as a laboratory for Beyond Standard Model searches, and perform an exhaustive treatment of the Standard Model pr…
The form factor expansion in the precision decay era
Leendert Hayen
Precision tests of the Standard Model using decay have always relied on a careful choice of transition to minimize residual nuclear structure uncertainties. Following breakthro…
Shake-up and shake-off spectra in the electron capture decay of atomic Be
Mauro Guerra, Inwook Kim, Stephan Friedrich +33
The most stringent laboratory-based experimental limits on the existence of sub-MeV sterile neutrinos are currently set by decay spectroscopy of radioactive Be embedded into su…
Aluminum-Based Superconducting Tunnel Junction Sensors for Nuclear Recoil Spectroscopy
Spencer L. Fretwell, Connor Bray, Inwook Kim +31
The BeEST experiment is searching for sub-MeV sterile neutrinos by measuring nuclear recoil energies from the decay of Be implanted into superconducting tunnel junction (STJ) s…
CONFLUX: A Standardized Framework to Calculate Reactor Antineutrino Flux
Xianyi Zhang, Anosh Irani, Michael P. Mendenhall +6
Nuclear fission reactors are abundant sources of antineutrinos. The flux and spectrum of antineutrinos emitted by a reactor can indicate its activity and composition, suggesting po…
Signal processing and spectral modeling for the BeEST experiment
Inwook Kim, Connor Bray, Andrew Marino +35
The Beryllium Electron capture in Superconducting Tunnel junctions (BeEST) experiment searches for evidence of heavy neutrino mass eigenstates in the nuclear electron capture decay…
Impact of reactor neutrino uncertainties on coherent scattering's discovery potential
Leendert Hayen
Nuclear power reactors are the most intense man-made source of antineutrino's and have long been recognized as promising sources for coherent elastic neutrino-nucleus scattering (C…
Direct Experimental Constraints on the Spatial Extent of a Neutrino Wavepacket
Joseph Smolsky, Kyle G Leach, Ryan Abells +35
Despite their high relative abundance in our Universe, neutrinos are the least understood fundamental particles of nature. They also provide a unique system to study quantum cohere…
Opportunities and open questions in modern decay
Leendert Hayen
For well over half a century, precision studies of neutron and nuclear decays have been at the forefront of searches for exotic electroweak physics. Recent advances in nuclear…
The Data Acquisition System for Phase-III of the BeEST Experiment
C. Bray, S. Fretwell, I. Kim +27
The BeEST experiment is a precision laboratory search for physics beyond the standard model that measures the electron capture decay of Be implanted into superconducting tunnel…
Ab initio calculation of the decay spectrum of He
Garrett B. King, Alessandro Baroni, Vincenzo Cirigliano +5
We calculate the spectrum in the decay of He using Quantum Monte Carlo methods with nuclear interactions derived from chiral Effective Field Theory and consistent weak vect…
values of the mirror transitions and the weak magnetism induced current in allowed nuclear decay
N. Severijns, L. Hayen, V. De Leebeeck +4
In recent years a number of correlation measurements in nuclear decay have been performed reaching a precision of the order of 1\% and below and it is expected that even higher…
Radiative corrections to nucleon weak charges and Beyond Standard Model impact
Leendert Hayen
The nucleon axial charge is a central ingredient in nuclear and particle physics, and a key observable in precision tests of the electroweak Standard Model sector and beyond. We re…
Consistent description of angular correlations in decay for Beyond Standard Model physics searches
Leendert Hayen, Albert R. Young
Measurements of angular correlations between initial and final particles in decay remain one of the most promising ways of probing the Standard Model and looking for new physic…
Standard Model renormalization of and its impact on new physics searches
Leendert Hayen
We present an Standard Model calculation of the inner radiative corrections to Gamow-Teller decays. We find that \textit{a priori} contributions arise from the…
Detailed spectrum calculations of Pb for new physics searches in liquid Xenon
Leendert Hayen, Stefano Simonucci, Simone Taioli
We present a critical assessment of the calculation and uncertainty of the Pb Bi ground state to ground state decay, the dominant source of background in…
A look into mirrors: A measurement of the -asymmetry in Ne decay and searches for new physics
Dustin Combs, Gordon Jones, William Anderson +3
High precision measurements of isospin decays in the neutron and nuclei provide strong model-independent constraints on extensions to the standard model of particle physics…
First-forbidden transitions in the reactor anomaly
Leendert Hayen, Joel Kostensalo, Nathal Severijns +1
We describe here microscopic calculations performed on the dominant forbidden transitions in reactor antineutrino spectra above 4 MeV using the nuclear shell model. By taking into…
Radiative corrections to Gamow-Teller decays
Leendert Hayen, Nathal Severijns
Radiative corrections in the electroweak sector constitute an essential component in the ability to disentangle Beyond Standard Model physics from experimental data. This is partic…
-value determination for NaNe and MgNa mirror-nuclei decays using high-precision mass spectrometry with ISOLTRAP at ISOLDE/CERN
Jonas Karthein, Dinko Atanasov, Klaus Blaum +14
We report on high-precision values of the NaNe and MgNa mirror -transitions from mass measurements with ISOLT…
Interfacing Geant4, Garfield++ and Degrad for the Simulation of Gaseous Detectors
Dorothea Pfeiffer, Lennert De Keukeleere, Carlos Azevedo +10
For several years, attempts have been made to interface Geant4 and other software packages with the aim of simulating the complete response of a gaseous particle detector. In such…
First-forbidden transitions in the reactor anomaly
L. Hayen, J. Kostensalo, N. Severijns +1
We study the dominant forbidden transitions in the antineutrino spectra of the fission actinides from 4 MeV onward using the nuclear shell model. Through explicit calculation of th…
Beta Spectrum Generator: High precision allowed spectrum shapes
Leendert Hayen, Nathal Severijns
Several searches for Beyond Standard Model physics rely on an accurate and highly precise theoretical description of the allowed spectrum. Following recent theoretical advances…