Publications (34)
Nuclear-recoil energy scale in CDMS II silicon dark-matter detectors
R. Agnese, A. J. Anderson, T. Aramaki +106
The Cryogenic Dark Matter Search (CDMS II) experiment aims to detect dark matter particles that elastically scatter from nuclei in semiconductor detectors. The resulting nuclear-re…
Measurements of the ion fraction and mobility of alpha and beta decay products in liquid xenon using EXO-200
J. B. Albert, D. J. Auty, P. S. Barbeau +82
Alpha decays in the EXO-200 detector are used to measure the fraction of charged and daughters created from alpha and beta decays, respectiv…
Investigation of radioactivity-induced backgrounds in EXO-200
J. B. Albert, D. J. Auty, P. S. Barbeau +83
The search for neutrinoless double-beta decay (0νββ) requires extremely low background and a good understanding of their sources and their influence on the rate in the region of…
Systematic Investigations of the Free Fermionic Heterotic String Gauge Group Statistics: Layer 1 Results
D. Moore, J. Greenwald, T. Renner +6
Using software under development at Baylor University, we explicitly construct all layer 1 gauge, weakly coupled free fermionic heterotic string models up to order 22 in four large…
Search for decay of Xe to the 0 excited state of Ba with EXO-200
200 Collaboration, J. B. Albert, D. J. Auty +88
EXO-200 is a single phase liquid xenon detector designed to search for neutrinoless double-beta decay of Xe to the ground state of Ba. We report here on a search fo…
Analysis of the low-energy electron-recoil spectrum of the CDMS experiment
Z. Ahmed, D. S. Akerib, S. Arrenberg +54
We report on the analysis of the low-energy electron-recoil spectrum from the CDMS II experiment using data with an exposure of 443.2 kg-days. The analysis provides details on the…
Search for Neutrinoless Double-Beta Decay with the Upgraded EXO-200 Detector
J. B. Albert, G. Anton, I. Badhrees +90
Results from a search for neutrinoless double-beta decay of Xe are presented using the first year of data taken with the upgraded EXO-200 detector. Relative to pr…
First Search for Lorentz and CPT Violation in Double Beta Decay with EXO-200
200 Collaboration, J. B. Albert, P. S. Barbeau +86
A search for Lorentz- and CPT-violating signals in the double beta decay spectrum of Xe has been performed using an exposure of 100 kgyr with the EXO-200 detector. N…
Search for Majoron-emitting modes of double-beta decay of Xe with EXO-200
200 Collaboration, J. B. Albert, D. J. Auty +89
EXO-200 is a single phase liquid xenon detector designed to search for neutrinoless double-beta decay of Xe. Here we report on a search for various Majoron-emitting modes b…
Characterization of an Ionization Readout Tile for nEXO
nEXO Collaboration, M. Jewell, A. Schubert +142
A new design for the anode of a time projection chamber, consisting of a charge-detecting "tile", is investigated for use in large scale liquid xenon detectors. The tile is produce…
Measurement of the Drift Velocity and Transverse Diffusion of Electrons in Liquid Xenon with the EXO-200 Detector
200 Collaboration, J. B. Albert, P. S. Barbeau +84
The EXO-200 Collaboration is searching for neutrinoless double beta decay using a liquid xenon (LXe) time projection chamber. This measurement relies on modeling the transport of c…
Multiplicative near-vector spaces
L. Boonzaaier, S. Marques, D. Moore
Near-vector spaces extend linear algebra tools to non-linear algebraic structures, enabling the study of non-linear problems. However, explicit constructions remain rare. This pape…
Cosmogenic Backgrounds to 0νββ in EXO-200
200 Collaboration, J. B. Albert, D. J. Auty +84
As neutrinoless double-beta decay experiments become more sensitive and intrinsic radioactivity in detector materials is reduced, previously minor contributions to the background m…
Search for Majorana neutrinos with the first two years of EXO-200 data
200 Collaboration, J. B. Albert, D. J. Auty +91
Many extensions of the Standard Model of particle physics suggest that neutrinos should be Majorana-type fermions, but this assumption is difficult to confirm. Observation of neutr…
Spectroscopy of Ba and Ba deposits in solid xenon for barium tagging in nEXO
B. Mong, S. Cook, T. Walton +73
Progress on a method of barium tagging for the nEXO double beta decay experiment is reported. Absorption and emission spectra for deposits of barium atoms and ions in solid xenon m…
Low-threshold analysis of CDMS shallow-site data
CDMS Collaboration, D. S. Akerib, M. J. Attisha +45
Data taken during the final shallow-site run of the first tower of the Cryogenic Dark Matter Search (CDMS II) detectors have been reanalyzed with improved sensitivity to small ener…
Thin film dielectric microstrip kinetic inductance detectors
B. A. Mazin, D. Sank, S. McHugh +6
Microwave Kinetic Inductance Detectors, or MKIDs, are a type of low temperature detector that exhibit intrinsic frequency domain multiplexing at microwave frequencies. We present t…
Revealing the Structure of an Accretion Disk Through Energy Dependent X-ray Microlensing
G. Chartas, C. S. Kochanek, X. Dai +3
We present results from monitoring observations of the gravitationally lensed quasar RX J1131-1231 performed with the Chandra X-ray Observatory. The X-ray observations were planned…
An Optimal Energy Estimator to Reduce Correlated Noise for the EXO-200 Light Readout
200 Collaboration, C. G. Davis, C. Hall +84
The energy resolution of the EXO-200 detector is limited by electronics noise in the measurement of the scintillation response. Here we present a new technique to extract optimal s…
Characterization of Three-Dimensional Microstructures in Single Crystal Diamond
P. Olivero, S. Rubanov, P. Reichart +8
We report on the Raman and photoluminescence characterization of three-dimensional microstructures created in single crystal diamond with a Focused Ion Beam (FIB) assisted lift-off…
An apparatus to manipulate and identify individual Ba ions from bulk liquid Xe
K. Twelker, S. Kravitz, M. Montero DÃez +77
We describe a system to transport and identify barium ions produced in liquid xenon, as part of R&D towards the second phase of a double beta decay experiment, nEXO. The goal is to…
Searches for Double Beta Decay of Xe with EXO-200
200 Collaboration, J. B. Albert, G. Anton +90
Searches for double beta decay of Xe were performed with EXO-200, a single-phase liquid xenon detector designed to search for neutrinoless double beta decay of Xe.…
Combined Limits on WIMPs from the CDMS and EDELWEISS Experiments
CDMS, EDELWEISS Collaborations, : +114
The CDMS and EDELWEISS collaborations have combined the results of their direct searches for dark matter using cryogenic germanium detectors. The total data set represents 614 kg.d…
Investigation of Quasi--Realistic Heterotic String Models with Reduced Higgs Spectrum
G. Cleaver, A. E. Faraggi, J. Greenwald +4
Quasi--realistic heterotic-string models in the free fermionic formulation typically contain an anomalous U(1), which gives rise to a Fayet-Iliopolous term that breaks supersymmetr…
An improved measurement of the 2νββ half-life of Xe-136 with EXO-200
J. B. Albert, M. Auger, D. J. Auty +94
We report on an improved measurement of the 2νββ half-life of Xe-136 performed by EXO-200. The use of a large and homogeneous time projection chamber allows for the precise esti…
Search for inelastic dark matter with the CDMS II experiment
CDMS Collaboration, Z. Ahmed, D. S. Akerib +63
Results are presented from a reanalysis of the entire five-tower data set acquired with the Cryogenic Dark Matter Search (CDMS II) experiment at the Soudan Underground Laboratory,…
VUV-sensitive Silicon Photomultipliers for Xenon Scintillation Light Detection in nEXO
A. Jamil, T. Ziegler, P. Hufschmidt +140
Future tonne-scale liquefied noble gas detectors depend on efficient light detection in the VUV range. In the past years Silicon Photomultipliers (SiPMs) have emerged as a valid al…
Search for nucleon decays with EXO-200
J. B. Albert, G. Anton, I. Badhrees +92
A search for instability of nucleons bound in Xe nuclei is reported with 223 kgyr exposure of Xe in the EXO-200 experiment. Lifetime limits of 3.3$\times 10^…
Deep Neural Networks for Energy and Position Reconstruction in EXO-200
S. Delaquis, M. J. Jewell, I. Ostrovskiy +91
We apply deep neural networks (DNN) to data from the EXO-200 experiment. In the studied cases, the DNN is able to reconstruct the relevant parameters - total energy and position -…
Trace radioactive impurities in final construction materials for EXO-200
D. S. Leonard, D. Auty, T. Didberidze +98
We report results from a systematic measurement campaign conducted to identify low radioactivity materials for the construction of the EXO-200 double beta decay experiment. Partial…
Constraining Polarized Foregrounds for EoR Experiments I: 2D Power Spectra from the PAPER-32 Imaging Array
S. A. Kohn, J. Aguirre, C. Nunhokee +15
Current-generation low frequency interferometers constructed with the objective of detecting the high-redshift 21 cm background, aim to generate power spectra of the brightness-tem…
Fluorescence Efficiency and Visible Re-emission Spectrum of Tetraphenyl Butadiene Films at Extreme Ultraviolet Wavelengths
V. M. Gehman, S. R. Seibert, K. Rielage +5
A large number of current and future experiments in neutrino and dark matter detection use the scintillation light from noble elements as a mechanism for measuring energy depositio…
Results from a Low-Energy Analysis of the CDMS II Germanium Data
CDMS Collaboration, Z. Ahmed, D. S. Akerib +62
We report results from a reanalysis of data from the Cryogenic Dark Matter Search (CDMS II) experiment at the Soudan Underground Laboratory. Data taken between October 2006 and Sep…
The evolution of host mass and black hole mass in QSOs from the 2dF QSO Redshift Survey
S. Fine, S. M. Croom, L. Miller +9
We investigate the relation between the mass of super-massive black holes (Mbh) in QSOs and the mass of the dark matter halos hosting them (Mdh). We measure the widths of broad emi…