57 citations · 303 across the 19 of their papers we have counts for
20 papers
From Commissioning to Precision Data-Taking: Resolving Operational Challenges in the Nab Detector Systems
L. J. Broussard, H. Acharya, R. Alarcon +36
Our understanding of the weak mixing of quarks, described by the Cabibbo Kobayashi Maskawa (CKM) matrix, currently presents an anomaly. Thanks to major strides in both theory and e…
The 3He(\vec n,p)3H parity-conserving asymmetry
M. Viviani, S. Baeßler, L. Barrón-Palos +28
Recently, the nHe collaboration reported a measurement of the parity-violating (PV) proton directional asymmetry $A_{\mathrm {PV}} = (1.55\pm 0.97~\mathrm {(st\ at)} \pm 0.24~\…
Fundamental Neutron Physics: a White Paper on Progress and Prospects in the US
R. Alarcon, A. Aleksandrova, S. Baeßler +88
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. Sign…
Comments on Systematic Effects in the NIST Beam Neutron Lifetime Experiment
F. E. Wietfeldt, R. Biswas, J. Caylor +10
We discuss issues raised by Serebrov, et al. in a recent paper regarding systematic effects in the beam neutron lifetime experiment performed at NIST. We show that these effects we…
Measurement of the Parity-Odd Angular Distribution of Gamma Rays From Polarized Neutron Capture on Cl
N. Fomin, R. Alarcon, L. Alonzi +61
We report a measurement of two energy-weighted gamma cascade angular distributions from polarized slow neutron capture on the Cl nucleus, one parity-odd correlation propor…
First Precision Measurement of the Parity Violating Asymmetry in Cold Neutron Capture on He
n3He Collaboration, M. T. Gericke, S. Baeßler +26
We report the first precision measurement of the parity-violating asymmetry in the direction of proton emission with respect to the neutron spin, in the reaction $^{3}\mathrm{He}(\…
The nHe Experiment: Parity Violation in Polarized Neutron Capture on He
n3He Collaboration, M. McCrea, M. L. Kabir +26
Significant progress has been made to experimentally determine a complete set of the parity-violating (PV) weak-interaction amplitudes between nucleons. In this paper we describe t…
A Comment on "The possible explanation of neutron lifetime beam anomaly" by A. P. Serebrov, et al
F. E. Wietfeldt, R. Biswas, R. W. Haun +10
We comment on a recent manuscript by A. P. Serebrov, et al. regarding residual gas charge exchange in the beam neutron lifetime experiment
A New Cryogenic Apparatus to Search for the Neutron Electric Dipole Moment
M. W. Ahmed, R. Alarcon, A. Aleksandrova +91
A cryogenic apparatus is described that enables a new experiment, nEDM@SNS, with a major improvement in sensitivity compared to the existing limit in the search for a neutron Elect…
The neutron electric dipole moment experiment at the Spallation Neutron Source
K. K. H. Leung, M. Ahmed, R. Alarcon +90
Novel experimental techniques are required to make the next big leap in neutron electric dipole moment experimental sensitivity, both in terms of statistics and systematic error co…
Using Nab to determine correlations in unpolarized neutron decay
L. J. Broussard, S. Baeßler, T. L. Bailey +28
The Nab experiment will measure the ratio of the weak axial-vector and vector coupling constants with precision and search for a Fierz term $b_…
The Nab Experiment: A Precision Measurement of Unpolarized Neutron Beta Decay
J. Fry, R. Alarcon, S. Baessler +69
Neutron beta decay is one of the most fundamental processes in nuclear physics and provides sensitive means to uncover the details of the weak interaction. Neutron beta decay can e…
First Observation of -odd Asymmetry in Polarized Neutron Capture on Hydrogen
D. Blyth, J. Fry, N. Fomin +61
We report the first observation of the parity-violating 2.2 MeV gamma-ray asymmetry in neutron-proton capture using polarized cold neutrons incident on a liquid parahydr…
Measurement of the absolute neutron beam polarization from a supermirror polarizer and the absolute efficiency of a neutron spin rotator for the NPDGamma experiment using a polarized He neutron spin-filter
M. M. Musgrave, S. Baessler, S. Balascuta +26
Accurately measuring the neutron beam polarization of a high flux, large area neutron beam is necessary for many neutron physics experiments. The Fundamental Neutron Physics Beamli…
New Search for Mirror Neutrons at HFIR
L. J. Broussard, K. M. Bailey, W. B. Bailey +22
The theory of mirror matter predicts a hidden sector made up of a copy of the Standard Model particles and interactions but with opposite parity. If mirror matter interacts with or…
Detection System for Neutron Decay Correlations in the UCNB and Nab experiments
L. J. Broussard, B. A. Zeck, E. R. Adamek +51
We describe a detection system designed for precise measurements of angular correlations in neutron decay. The system is based on thick, large area, highly segmented silicon de…
Determination of the Free Neutron Lifetime
J. David Bowman, L. J. Broussard, S. M. Clayton +24
We present the status of current US experimental efforts to measure the lifetime of the free neutron by the "beam" and "bottle" methods. BBN nucleosynthesis models require accurate…
New measurement of the scattering cross section of slow neutrons on liquid parahydrogen from neutron transmission
K. B. Grammer, R. Alarcon, L. Barrón-Palos +25
Liquid hydrogen is a dense Bose fluid whose equilibrium properties are both calculable from first principles using various theoretical approaches and of interest for the understand…
Fundamental Neutron Physics Beamline at the Spallation Neutron Source at ORNL
N. Fomin, G. L. Greene, R. Allen +7
We describe the Fundamental Neutron Physics Beamline (FnPB) facility located at the Spallation Neutron Source at Oak Ridge National Laboratory. The FnPB was designed for the conduc…
Coherent Scattering Investigations at the Spallation Neutron Source: a Snowmass White Paper
D. Akimov, A. Bernstein, P. Barbeau +54
The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory, Tennessee, provides an intense flux of neutrinos in the few tens-of-MeV range, with a sharply-pulsed timing st…