A5066322170- Atomic and Subatomic Physics Research
- Quantum Chromodynamics and Particle Interactions
- Quantum, superfluid, helium dynamics
- Nuclear Physics and Applications
- Particle physics theoretical and experimental studies
- Advanced NMR Techniques and Applications
- Nuclear physics research studies
- Superconducting Materials and Applications
- Dark Matter and Cosmic Phenomena
- High-Energy Particle Collisions Research
- Nuclear reactor physics and engineering
- Healthcare Policy and Management
- Cold Atom Physics and Bose-Einstein Condensates
- Physics of Superconductivity and Magnetism
- Health Literacy and Information Accessibility
- Particle Detector Development and Performance
- Ethics in medical practice
- Patient Dignity and Privacy
- Mental Health Treatment and Access
- Healthcare Quality and Management
- Trauma and Emergency Care Studies
- Telemedicine and Telehealth Implementation
- Emergency and Acute Care Studies
- Patient Satisfaction in Healthcare
- Sports Performance and Training
University of Alabama
2006-2024
Micron (United States)
2024
Welch Foundation
2024
Swansea University
2024
Public Health Wales
2024
Marquette University
2021-2024
Los Alamos National Laboratory
1999-2023
Stone Clinic
2020-2022
Stanford Health Care
2021
University of Dayton
2005-2020
The spin structure function of the neutron gn1 has been determined over range 0.03<x<0.6 at an average Q2 2 (GeV/c)2 by measuring asymmetry in deep inelastic scattering polarized electrons from a 3He target energies between 19 and 26 GeV. integral is found to be F10gn1(x)dx=-0.022±0.011. Earlier reported proton results together with Bjorken sum rule predict F10gn1(x)dx=-0.059±0.019.Received 1 April 1993DOI:https://doi.org/10.1103/PhysRevLett.71.959©1993 American Physical Society
Measurements are reported of the proton and deuteron spin structure functions ${g}_{1}^{p}$ ${g}_{1}^{d}$ at beam energies 29.1, 16.2, 9.7 GeV, ${g}_{2}^{p}$ ${g}_{2}^{d}$ a energy 29.1 GeV. The integrals ${\ensuremath{\Gamma}}_{p}={\ensuremath{\int}}_{0}^{1}{g}_{1}^{p}{(x,Q}^{2})dx$ ${\ensuremath{\Gamma}}_{d}={\ensuremath{\int}}_{0}^{1}{g}_{1}^{d}{(x,Q}^{2})dx$ were evaluated fixed ${Q}^{2}=3(\mathrm{GeV}{/c)}^{2}$ using full data set to yield...
We report on a precision measurement of the neutron spin structure function ${g}_{1}^{n}$ using deep inelastic scattering polarized electrons by ${}^{3}\mathrm{He}$. For kinematic range $0.014<x<0.7$ and $1<{Q}^{2}<17(\mathrm{GeV}/c{)}^{2}$, we obtain $\ensuremath{\int}{0.014}^{0.7}{g}_{1}^{n}(x)dx\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}\ensuremath{-}0.036\ifmmode\pm\else\textpm\fi{}0.004(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.005(\mathrm{syst})$ at an average...
We have measured the ratio $\frac{{g}_{1}^{p}}{{F}_{1}^{p}}$ over range $0.029<x<0.8$ and $1.3<{Q}^{2}<10$ ${(\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c})}^{2}$ using deep-inelastic scattering of polarized electrons from ammonia. An evaluation integral $\ensuremath{\int}{0}^{1}{g}_{1}^{p}(x, {Q}^{2})\mathrm{dx}$ at fixed ${Q}^{2}=3$ yields 0.127\ifmmode\pm\else\textpm\fi{}0.004(stat)\ifmmode\pm\else\textpm\fi{}0.010(syst), in agreement with previous experiments, but well below Ellis-Jaffe sum...
The neutron longitudinal and transverse asymmetries A1n A2n have been extracted from deep inelastic scattering of polarized electrons by a He3 target at incident energies 19.42, 22.66, 25.51 GeV. measurement allows for the determination spin structure functions g1n(x, Q2) g2n(x, over range 0.03<x<0.6 an average Q2 2 (GeV/c)2. data are used evaluation Ellis-Jaffe Bjorken sum rules. function is small negative within our measurement, yielding integral ∫0.030.6g1n(x)dx=−0.028±0.006 (stat)±0.006...
We report on a high-statistics measurement of the deuteron spin structure function ${g}_{1}^{d}$ at beam energy 29 GeV in kinematic range $0.029<x<0.8$ and $1<{Q}^{2}<10$ (GeV $/c$${)}^{2}$. The integral ${\ensuremath{\gamma}}_{1}^{d}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}\ensuremath{\int}{1}^{}{g}_{1}^{d}\mathrm{dx}$ evaluated fixed ${Q}^{2}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}3$ $/c$${)}^{2}$ gives...
Abstract Background Moral distress (MD) occurs when clinicians are constrained from taking what they believe to be ethically appropriate actions. When unattended, MD may result in moral injury and/or suffering. Literature surrounding how unit‐based critical care nurse leaders address practice is limited. Aim The aim of this study was explore ICU recognize and among their staff. Study Design Qualitative descriptive with inductive thematic analysis. Results Five participated a one‐time...
New measurements are reported on the deuteron spin structure function g_1^d. These results were obtained from deep inelastic scattering of 48.3 GeV electrons polarized deuterons in kinematic range 0.01 < x 0.9 and 1 Q^2 40 (GeV/c)^2. first high dose electron data using lithium deuteride (6Li2H) as target material. Extrapolations performed to obtain moments g_1^d, including Gamma_1^d, net quark polarization Delta Sigma.
We have measured the spin structure functions g2p and g2d virtual photon asymmetries A2p A2d over kinematic range 0.02⩽x⩽0.8 0.7⩽Q2⩽20GeV2 by scattering 29.1 32.3 GeV longitudinally polarized electrons from transversely NH3 6LiD targets. Our g2 approximately follows twist-2 Wandzura–Wilczek calculation. The twist-3 reduced matrix elements d2p d2n are less than two standard deviations zero. data inconsistent with Burkhardt–Cottingham sum rule if there is no pathological behavior as x→0....
We have measured proton and deuteron virtual photon-nucleon asymmetries ${A}_{2}^{p}$ ${A}_{2}^{d}$ structure functions ${g}_{2}^{p}$ ${g}_{2}^{d}$ over the range $0.03<x<0.8$ $1.3<{Q}^{2}<10(\mathrm{GeV}/c{)}^{2}$ by inelastically scattering polarized electrons off ammonia targets. Results for ${A}_{2}$ are significantly smaller than positivity limit $\sqrt{R}$ both Within experimental precision ${g}_{2}$ data well described twist-2 contribution, ${g}_{2}^{\mathrm{WW}}$. Twist-3 matrix...
We have measured the spin structure functions g2p and g2d virtual photon asymmetries A2p A2d over kinematic range 0.02≤x≤0.8 1.0≤Q2≤30 (GeV/c)2 by scattering 38.8 GeV longitudinally polarized electrons from transversely NH3 6LiD targets. The absolute value of A2 is significantly smaller than R positivity limit range, while g2 consistent with twist-2 Wandzura-Wilczek calculation. obtain results for twist-3 reduced matrix elements d2p, d2d d2n. Burkhardt-Cottingham sum rule integral ∫g2(x)dx...
The ratio g1F1 has been measured over the range 0.03 < x 0.6 and 0.3 Q2 10 (GeV/c)2 using deep-inelastic scattering of polarized electrons from protons deuterons. We find to be consistent with no Q2-dependence at fixed in region > 1 (GeV/c)2. A trend is observed for decrease lower Q2. Fits world data without a possible are agreement Bjorken sum rule, but Δq substantially less than quark-parton model expectation.
The NPDGamma collaboration reports results from the first phase of a measurement parity violating up-down asymmetry Aγ with respect to neutron spin direction γ rays emitted in reaction n⃗+p→d+γ using capture polarized cold neutrons on protons liquid parahydrogen target. One expects parity-odd effects hadronic weak interaction between nucleons be induced by quarks. is dominated ΔI=1, 3S1-3P1 transition amplitude n-p system. was completed at Los Alamos Neutron Science Center spallation source...
Unit-based critical care nurse leaders (UBCCNL) play a role in exemplifying ethical leadership, addressing moral distress, and mitigating contributing factors to distress on their units. Despite several studies examining the experience of by bedside nurses, knowledge is limited regarding UBCCNL's experience.
We have measured the neutron structure function g2n and virtual photon-nucleon asymmetry A2n over kinematic range 0.014 ⩽ × 0.7 1.0 Q2 17.0 by scattering 48.3 GeV longitudinally polarized electrons from 3He. Results for are significantly smaller than √R positivity limit most of data generally consistent with twist-2 Wandzura-Wilczek prediction. Using our we obtain results twist-3 reduced matrix element d2n, integral ∫ g2n(x) dx in 1.0. Data this experiment combined existing to an average d2n dx.
We have measured the proton and deuteron spin structure functions g_1^p g_1^d in region of nucleon resonances for W^2 < 5 GeV^2 $Q^2\simeq 0.5$ 1.2$ by inelastically scattering 9.7 GeV polarized electrons off $^{15}NH_3$ $^{15}ND_3$ targets. observe significant resonance region. used present results, together with deep-inelastic data at higher W^2, to extract $\Gamma(Q^2)\equiv\int_0^1 g_1(x,Q^2) dx$. This is first information on low-Q^2 evolution Gamma toward Gerasimov-Drell-Hearn limit Q^2 = 0.
We have produced 70%–75% 3He polarization by spin-exchange optical pumping in cells ≈100 cm3 volume. The achieved is consistent with known and spin-relaxation rates, but only when the recently discovered temperature dependence of relaxation included. Absolute measurements were performed using two different methods laboratories. results obtained either a spectrally narrowed laser or one type broadband laser. Based on tests several larger at pressures near 1 bar, we find that power required to...
In March 2021, the American Association of Colleges Nursing (AACN) endorsed and published a report that included reenvisioned framework for nursing education. This introduced innovative bold ideas transforming education pedagogy from concept-based model to competency-based new establishes core set expectations standards curricula common all educational programs moving forward. Before this transformative change can occur, nurse educators must first understand what is expected them before they...