A5106485211- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Nuclear physics research studies
- Superconducting Materials and Applications
- Dark Matter and Cosmic Phenomena
- Atomic and Molecular Physics
- Magnetic confinement fusion research
- Infrastructure Maintenance and Monitoring
- Computational Physics and Python Applications
- Asphalt Pavement Performance Evaluation
- Black Holes and Theoretical Physics
- Particle accelerators and beam dynamics
- Medical Imaging Techniques and Applications
- Traffic Prediction and Management Techniques
- Digital Economy and Work Transformation
- X-ray Spectroscopy and Fluorescence Analysis
- Hydrocarbon exploration and reservoir analysis
- Magnetic properties of thin films
- Solidification and crystal growth phenomena
- Sharing Economy and Platforms
- Smart Materials for Construction
Fudan University
2022-2025
William & Mary
2025
University of Science and Technology of China
2023-2024
Inner Mongolia University of Technology
2024
Shanxi Normal University
2021-2024
Carnegie Mellon University
2017-2023
Johannes Gutenberg University Mainz
2023
National and Kapodistrian University of Athens
2023
Ruhr University Bochum
2023
University of Groningen
2023
We report on the measurement of γp→J/ψp cross section from E_{γ}=11.8 GeV down to threshold at 8.2 using a tagged photon beam with GlueX experiment. find that total falls toward less steeply than expected two-gluon exchange models. The differential dσ/dt has an exponential slope 1.67±0.39 GeV^{-2} 10.7 average energy. LHCb pentaquark candidates P_{c}^{+} can be produced in s channel this reaction. see no evidence for them and set model-dependent upper limits their branching fractions...
We report the total and differential cross sections for $J/\psi$ photoproduction with large acceptance GlueX spectrometer photon beam energies from threshold at 8.2~GeV up to 11.44~GeV over full kinematic range of momentum transfer squared, $t$. Such coverage facilitates extrapolation forward ($t = 0$) point beyond physical region. The section is used by many theoretical models plays an important role in understanding its relation $J/\psi-$proton interaction. These measurements near are also...
We report on the first measurement of J/ψ photoproduction from nuclei in photon energy range 7 to 10.8 GeV, extending above and below threshold free proton ∼8.2 GeV. The experiment used a tagged beam incident deuterium, helium, carbon, GlueX detector at Jefferson Lab measure semi-inclusive A(γ,e^{+}e^{-}p) reaction with dilepton invariant mass M(e^{+}e^{-})∼m_{J/ψ}=3.1 incoherent cross sections measured are extracted as function energy, momentum transfer, proton-reconstructed missing...
Abstract Catalyzed sodium borohydride (NaBH 4 ) hydrolysis is integral to H 2 ‐supply systems in fuel cells, with Co‐B among the most effective catalysts featured high B─H bond cleavage activity. However, its limited water dissociation capability produces an insufficient proton supply for generation. In this study, Ru element was introduced of deprotonation into system, constructing a dual‐site catalyst NaBH hydrolysis. A series situ characterizations confirmed accelerated kinetics on...
We present a search for axionlike particles, $a$, produced in photon-proton collisions at center-of-mass energy of approximately 4 GeV, focusing on the scenario where $a$-gluon coupling is dominant. The uses $a\ensuremath{\rightarrow}\ensuremath{\gamma}\ensuremath{\gamma}$ and $a\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}$ decays, data sample corresponding to an integrated luminosity $168\text{ }\text{...
Deep Learning techniques have been successfully applied to areas like image recognition and speech translation. It has shown a great potential on recognizing generalization hidden patterns in data. Logs are critical reservoir characterization. NMR logs contain valuable information formation fluid, but it is more expensive than other logs. The purpose of our study generate T2 based mineral composition using combined deep learning with limited number data set. Our shows that technique can...
We report on the measurement of beam asymmetry $\mathrm{\ensuremath{\Sigma}}$ for reactions $\stackrel{P\vec}{\ensuremath{\gamma}}p\ensuremath{\rightarrow}p\ensuremath{\eta}$ and $\stackrel{P\vec}{\ensuremath{\gamma}}p\ensuremath{\rightarrow}p{\ensuremath{\eta}}^{\ensuremath{'}}$ from GlueX experiment using an 8.2--8.8-GeV linearly polarized tagged photon incident a liquid hydrogen target in Hall D at Jefferson Laboratory. These measurements are made as function momentum transfer...
The GlueX experiment at Jefferson Lab studies photoproduction of mesons using linearly polarized 8.5GeV photons impinging on a hydrogen target which is contained within detector with near-complete coverage for charged and neutral particles. We present measurements spin-density matrix elements the vector meson ρ(770). statistical precision achieved exceeds that previous experiments in this energy range by orders magnitude. confirm high degree s-channel helicity conservation small squared...
We report on the measurement of spin density matrix elements $\mathrm{\ensuremath{\Lambda}}(1520)$ in photoproduction reaction $\ensuremath{\gamma}p\ensuremath{\rightarrow}\mathrm{\ensuremath{\Lambda}}(1520){K}^{+}$, via its subsequent decay to ${K}^{\ensuremath{-}}p$. The was performed as part GlueX experimental program Hall D at Jefferson Laboratory using a linearly polarized photon beam with...
In the field of autonomous driving or robotics, simultaneous localization and mapping (SLAM) multi-object tracking (MOT) are two fundamental problems generally applied separately. Solutions to SLAM MOT usually rely on certain assumptions, such as static environment assumption for accurate ego-vehicle pose MOT. But in complex dynamic environments, it is difficult even impossible meet these assumptions. Therefore, SLAMMOT, i.e., localization, mapping, moving object tracking, integrated system...
We report a measurement of the π− photoproduction beam asymmetry for reaction →γp→π−Δ++ using data from GlueX experiment in photon energy range 8.2–8.8 GeV. The Σ is measured as function four-momentum transfer t to Δ++ and compared phenomenological models. find that varies t: negative at smaller values positive higher |t|. can be described theoretically by t-channel particle exchange requiring pseudoscalar, vector, tensor intermediaries. In particular, this requires charge exchange, allowing...
We report the total and differential cross sections for $J/ψ$ photoproduction with large acceptance GlueX spectrometer photon beam energies from threshold at 8.2~GeV up to 11.44~GeV over full kinematic range of momentum transfer squared, $t$. Such coverage facilitates extrapolation forward ($t = 0$) point beyond physical region. The section is used by many theoretical models plays an important role in understanding its relation $J/ψ-$proton interaction. These measurements near are also...
We report measurements of the photon beam asymmetry $\mathrm{\ensuremath{\Sigma}}$ for reaction $\stackrel{P\vec}{\ensuremath{\gamma}}p\ensuremath{\rightarrow}{K}^{+}{\mathrm{\ensuremath{\Sigma}}}^{0}$(1193) using GlueX spectrometer in Hall D at Jefferson Lab. Data were collected by a linearly polarized energy range 8.2--8.8 GeV incident on liquid hydrogen target. The was measured as function Mandelstam variable $t$, and single value extracted events produced $u$ channel. These are first...
When a hypersonic vehicle flies, it will have friction with the atmosphere, ionizing surrounding air, and producing plasma sheath containing large number of free electrons. The cause electromagnetic wave to seriously attenuate, which result in communication interruption other problems. With gradual realization terahertz technology, its high penetrability anti-interference performance provides an important way solve blackout problem. Thus, using problem encountered during reentry is great...
We report the measurement of spin-density matrix elements $\Delta^{++}(1232)$ in photoproduction reaction $\gamma p \to \pi^-\Delta^{++}(1232)$ with GlueX experiment Hall D at Jefferson Lab. The used a linearly polarized photon beam $E_\gamma=8.2-8.8$~GeV and statistical precision exceeds previous from SLAC by three orders magnitude for momentum transfer squared region $-t < 1.4$ GeV$^2$. data are sensitive to previously undetermined relative sign between couplings existing Regge exchange...
We report on the first measurement of $J/\psi$ photoproduction from nuclei in photon energy range $7$ to $10.8$ GeV, extending above and below threshold free proton $\sim8.2$ GeV. The experiment used a tagged beam incident deuterium, helium, carbon, GlueX detector at Jefferson Lab measure semi-inclusive $A(\gamma,e^+e^-p)$ reaction with dilepton invariant mass $M(e^+e^-)\sim m_{J/\psi}=3.1$ incoherent cross sections measured are extracted as function energy, momentum transfer, reconstructed...
Baryon–anti-baryon photoproduction off a proton target is being studied in detail at Jefferson Lab with the GlueX Experiment. We observe pp¯ and, for first time, ΛΛ¯ (with Λ → π−p, Λ¯ π+ p¯) from thresholds up to Eγ = 11.4 GeV. Preliminary spectra data accumulated during Phase-I period are shown. Angular distributions of photoproduced hyperons indicate more than one production mechanism reaction channel γp ΛΛ¯p. A Monte Carlo simulation four mechanisms, tested through comparison between and...
For the first time, baryon-antibaryon photoproduction in reaction $\gamma p \to \Lambda \bar{\Lambda} p$ has been observed at photon energies from threshold near 4.9 GeV to 11.6 GeV. The measurements are progress with GlueX spectrometer Hall D Jefferson Lab. We describe here apparatus and methods used make these outline physics goals of work. Some newly-seen phenomenology is presented.