R. T. Kouzes
A5105760592- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Quantum Chromodynamics and Particle Interactions
- Atomic and Subatomic Physics Research
- Nuclear physics research studies
- Radioactive contamination and transfer
- High-Energy Particle Collisions Research
- Radioactivity and Radon Measurements
- Nuclear and radioactivity studies
- Graphite, nuclear technology, radiation studies
- Particle Accelerators and Free-Electron Lasers
- Atomic and Molecular Physics
- Nuclear reactor physics and engineering
- Particle accelerators and beam dynamics
- Mass Spectrometry Techniques and Applications
- Superconducting Materials and Applications
- Advanced Chemical Physics Studies
- Medical Imaging Techniques and Applications
- Muon and positron interactions and applications
- Atmospheric Ozone and Climate
Pacific Northwest National Laboratory
2015-2024
Oak Ridge National Laboratory
1979-2017
Campbell Collaboration
2012-2016
Office of Scientific and Technical Information
2002-2014
National Technical Information Service
2001-2014
United States Department of Commerce
2001-2014
Photonic Systems (United States)
2013
Clarkson University
2013
Canadian Standards Association
2013
University of Manchester
2013
Observations of neutral-current nu interactions on deuterium in the Sudbury Neutrino Observatory are reported. Using neutral current (NC), elastic scattering, and charged reactions assuming standard 8B shape, nu(e) component solar flux is phis(e) = 1.76(+0.05)(-0.05)(stat)(+0.09)(-0.09)(syst) x 10(6) cm(-2) s(-1) for a kinetic energy threshold 5 MeV. The non-nu(e) phi(mu)(tau) 3.41(+0.45)(-0.45)(stat)(+0.48)(-0.45)(syst) s(-1), 5.3sigma greater than zero, providing strong evidence flavor...
Solar neutrinos from the decay of $^8$B have been detected at Sudbury Neutrino Observatory (SNO) via charged current (CC) reaction on deuterium and by elastic scattering (ES) electrons. The CC is sensitive exclusively to nu_e's, while ES also has a small sensitivity nu_mu's nu_tau's. flux nu_e's ^8B measured rate \phi^CC(nu_e) = 1.75 +/- 0.07 (stat)+0.12/-0.11 (sys.) 0.05(theor) x 10^6 /cm^2 s. Assuming no flavor transformation, inferred \phi^ES(nu_x) 2.39+/-0.34 (stat.)+0.16}/-0.14 (sys)...
The Sudbury Neutrino Observatory (SNO) has measured day and night solar neutrino energy spectra rates. For charged current events, assuming an undistorted 8B spectrum, the minus rate is 14.0%+/-6.3%(+1.5%)(-1.4%) of average rate. If total flux active neutrinos additionally constrained to have no asymmetry, nu(e) asymmetry found be 7.0%+/-4.9%(+1.3%)(-1.2%). A global analysis in terms matter-enhanced oscillations two flavors strongly favors large mixing angle solution.
The M ajorana D emonstrator will search for the neutrinoless double-beta<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mo stretchy="false">(</mml:mo><mml:mi>β</mml:mi><mml:mi>β</mml:mi><mml:mfenced separators="|"><mml:mrow><mml:mn fontstyle="italic">0</mml:mn><mml:mi>ν</mml:mi></mml:mrow></mml:mfenced><mml:mo stretchy="false">)</mml:mo></mml:math>decay of isotope<mml:math id="M2"/>Ge with a mixed array enriched and natural germanium detectors. observation this rare...
The Majorana Collaboration is operating an array of high purity Ge detectors to search for neutrinoless double-β decay in ^{76}Ge. Demonstrator comprises 44.1 kg (29.7 enriched ^{76}Ge) split between two modules contained a low background shield at the Sanford Underground Research Facility Lead, South Dakota. Here we present results from data taken during construction, commissioning, and start full operations. We achieve unprecedented energy resolution 2.5 keV FWHM Q_{ββ} very with no...
The Majorana Demonstrator searched for neutrinoless double-β decay (0νββ) of ^{76}Ge using modular arrays high-purity Ge detectors operated in vacuum cryostats a low-background shield. with up to 40.4 kg (27.2 enriched ∼88% ^{76}Ge). From these measurements, the has accumulated 64.5 yr active exposure. With world-leading energy resolution 2.52 keV FWHM at 2039 Q_{ββ} (0.12%), we set half-life limit 0νββ T_{1/2}>8.3×10^{25} (90% C.L.). This provides range upper limits on m_{ββ} (113-269) meV...
A radiochemical $^{71}\mathrm{\ensuremath{-}}^{71}$Ge experiment using 30 tons of gallium to determine the primary flux neutrinos from Sun has begun operation at Baksan Neutrino Observatory in U.S.S.R. Assuming that extraction efficiency for $^{71}\mathrm{Ge}$ atoms produced by solar is same as natural Ge carrier, we observed capture rate be ${20}_{\mathrm{\ensuremath{-}}20}^{+15}$(stat)\ifmmode\pm\else\textpm\fi{}32(syst) neutrino units (SNU), resulting a limit less than 79 SNU (90% C.L.)....
The success of many complex scientific investigations hinges on bringing the capabilities diverse individuals from multiple institutions together with state-of-the-art instrumentation. Computer scientists working domain specialists have made progress several fronts to create and integrate tools required for Internet-based collaboration. However, both technical sociological challenges remain. computer-supported cooperative work are now being applied such collaborations. Through immersive...
We report a measurement of the process $\ensuremath{\gamma}{\ensuremath{\gamma}}^{*}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}$ with $759\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data sample recorded Belle detector at KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. The pion transition form factor, $F({Q}^{2})$, is measured for kinematical region $4\text{ }{\mathrm{GeV}}^{2}\ensuremath{\lesssim}{Q}^{2}\ensuremath{\lesssim}40\text{ }{\mathrm{GeV}}^{2}$, where...
We measure the branching fraction of B−→τ−¯ντ using full Υ(4S) data sample containing 772×106 B¯¯¯B pairs collected with Belle detector at KEKB asymmetric-energy e+e− collider. Events are tagged by reconstructing one B mesons decaying into hadronic final states, and candidates detected in recoil. find evidence for a significance 3.0 standard deviations including systematic errors B(B−→τ−¯ντ)=[0.72+0.27−0.25(stat)±0.11(syst)]×10−4.Received 16 November...
We report on a search for heavy neutrinos in B-meson decays. The results are obtained using data sample that contains 772x10^6 BB-bar pairs collected at the Upsilon(4S) resonance with Belle detector KEKB asymmetric-energy e+e- collider. No signal is observed and upper limits set mixing of left-handed Standard Model mass range 0.5 - 5.0 GeV/c^2.
Through the development of new classes software, algorithms, and hardware, data-intensive applications provide timely meaningful analytical results in response to exponentially growing data complexity associated analysis requirements.
We report a search for the rare decays $B\ensuremath{\rightarrow}{h}^{(*)}\ensuremath{\nu}\overline{\ensuremath{\nu}}$, where ${h}^{(*)}$ stands ${K}^{+}$, ${K}_{S}^{0}$, ${K}^{*+}$, ${K}^{*0}$, ${\ensuremath{\pi}}^{+}$, ${\ensuremath{\pi}}^{0}$, ${\ensuremath{\rho}}^{+}$, ${\ensuremath{\rho}}^{0}$ and $\ensuremath{\phi}$. The results are obtained from $711\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data sample that contains $772\ifmmode\times\else\texttimes\fi{}{10}^{6}B\overline{B}$...
The Majorana Collaboration is operating an array of high-purity Ge detectors to search for the neutrinoless double-$\ensuremath{\beta}$ decay $^{76}\mathrm{Ge}$. Demonstrator consists 44.1 kg (29.7 enriched 88% in $^{76}\mathrm{Ge}$) split between two modules constructed from ultraclean materials. Both are contained a low-background shield at Sanford Underground Research Facility Lead, South Dakota. We present updated results on $^{76}\mathrm{Ge}$ with $26.0\ifmmode\pm\else\textpm\fi{}0.5$...
The Majorana Demonstrator neutrinoless double-beta decay experiment comprises a 44 kg (30 enriched in ^{76}Ge) array of p-type, point-contact germanium detectors. With its unprecedented energy resolution and ultralow backgrounds, also searches for rare event signatures from beyond standard model physics the low region below 100 keV. In this Letter, we test continuous spontaneous localization (CSL) model, one mathematically well-motivated wave function collapse models aimed at solving...
We comment on the recent claim for experimental observation of neutrinoless double-beta decay. discuss several limitations in analysis provided that paper and conclude there is no basis presented claim.
We present new limits on exotic keV-scale physics based 478 kg d of Majorana Demonstrator commissioning data. Constraints at the 90% confidence level are derived bosonic dark matter (DM) and solar axion couplings, Pauli exclusion principle violating (PEPV) decay, electron decay using monoenergetic peak signal above our background. Our most stringent DM constraints set for 11.8 keV mass particles, limiting g_{Ae}<4.5×10^{-13} pseudoscalars (α^{'}/α)<9.7×10^{-28} vectors. also report a 14.4...