A5030790169- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Cosmology and Gravitation Theories
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Computational Physics and Python Applications
- Neutrino Physics Research
- Energetic Materials and Combustion
- Aluminum Alloys Composites Properties
- Rocket and propulsion systems research
- Advanced ceramic materials synthesis
- Aluminum Alloy Microstructure Properties
- Combustion and Detonation Processes
- Gamma-ray bursts and supernovae
- Chemical Thermodynamics and Molecular Structure
- Transition Metal Oxide Nanomaterials
- Advanced Measurement and Detection Methods
- Characterization and Applications of Magnetic Nanoparticles
- Thermal Radiation and Cooling Technologies
- Nuclear reactor physics and engineering
- Advanced materials and composites
- Calibration and Measurement Techniques
- Smart Materials for Construction
- Spacecraft and Cryogenic Technologies
University of Shanghai for Science and Technology
2023-2025
Chinese Academy of Surveying and Mapping
2024
Institute of High Energy Physics
2016-2023
Vanderbilt University
2016-2023
A. Alikhanyan National Laboratory
2023
Abdus Salam Centre for Physics
2023
University of Iowa
2023
University at Buffalo, State University of New York
2016-2022
Institute of High Energy Physics
1993-2020
The University of Texas at Dallas
2020
The BES experiment at the Beijing electron-positron collider has observed ξ(2230) signal in π+π−, K+K−, K0SK0S, and p¯p final states with 4.6σ, 4.1σ, 4.0σ, 3.8σ statistical significances, respectively. new observations of two nonstrange decay modes ξ→π+π− are important evidence for glueball interpretation ξ(2230).Received 30 October 1995DOI:https://doi.org/10.1103/PhysRevLett.76.3502©1996 American Physical Society
This paper investigates the influencing factors of colorimetric radiation image temperature measurement method, including representative wavelength, calibration and camera exposure time. A relatively high-precision method is next obtained for selecting a wavelength method. Then it applied to combustion solid propellant specimen. Finally, variation regularity different was analyzed in process combustion. The results show that maximum response each channel as function construction more...
To characterize the combustion properties of solid propellants, synchronized measurement method burning rate and temperature is proposed combined shadow imaging radiation imaging. Using spectroscopic filtering imaging, images a propellant specimen are obtained synchronously. Burning calculated by surface movement velocity images, image thermometry. Measurement accuracies validated other independent methods. On this basis, measurements different formulations specimens under working conditions...
Heat flux (W/cm2) through irradiated fur layer is dependent, to a great extent, upon reasonable description ofthe solar energy absorbed within the medium and reflected from it. A model that predicts temperature profile heatflux was developed. The method incorporates thermophysical optical (individual bulk)properties of layer. For no wind assumption considered in this study, hair coat higherthan assumed skin surface, coverage by black resulted higher heat load at surface thanthat white coat.
The Beijing Spectrometer (BES) experiment has observed purely leptonic decays of the ${D}_{s}$ meson in reaction ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{D}_{s}^{+}{D}_{s}^{\ensuremath{-}}$ at a c.m. energy 4.03 GeV. Three events are which one hadronically to $\ensuremath{\varphi}\ensuremath{\pi}$, ${\overline{K}}^{*0}K$, or ${\overline{K}}^{0}K$, and other leptonically $\ensuremath{\mu}{\ensuremath{\nu}}_{\ensuremath{\mu}}$...
Alumina‐matrix composites with and without SiC particulates have been produced by directed melt oxidation of a multicomponent Al alloy. In the more general case, microstructure consists three interpenetrating phases: preform, continuous α‐Al 2 O 3 matrix, network unoxidized metal. The volume fraction metal within product decreases increasing processing temperature, its distribution is less uniform when preform present. does not show evidence degradation molten alloy, but growth front tends...
The data on $J/\ensuremath{\psi}\ensuremath{\rightarrow}\ensuremath{\gamma}{K}^{+}{K}^{\ensuremath{-}}$ from the BES experiment at Beijing electron-positron collider have been analyzed. We find two resonances in 1.7 GeV region which were identified as ${f}_{J}(1710)$: a scalar with mass $1781\ifmmode\pm\else\textpm\fi{}{8}_{\ensuremath{-}31}^{+10}(\mathrm{MeV})$ and width $85\ifmmode\pm\else\textpm\fi{}{24}_{\ensuremath{-}19}^{+22}(\mathrm{MeV})$, tensor...
The short-term prediction of single well production can provide direct data support for timely guiding the optimization and adjustment oil parameters studying judging conditions. In view coupling effect complex factors on daily output a well, method based multi-agent hybrid model is proposed, process constructed. First, CEEMDAN used to decompose reconstruct original set, sliding window compose set with obtained components. Features components by decomposition are described as feature vectors...
The cross section for e+e−→ρπ has been measured by the BES detector at BEPC center-of-mass energies covering a 40 MeV interval spanning Jψ resonance. data are used to search vector gluonium state hypothesized Brodsky, Lepage, and Tuan as an explanation of ρπ puzzle in charmonium physics. shape is compatible with that total hadronic section. No distortions indicating presence glueball seen.Received 19 October 1995DOI:https://doi.org/10.1103/PhysRevD.54.1221©1996 American Physical Society
Purely leptonic decays of the charged D meson have been studied using reaction e+e−→D∗+D− at a center mass energy 4.03 GeV. A search was performed for D→μνμ recoiling against D0 or D+ which had reconstructed from its hadronic decay products. single event candidate found in e+e−→D∗+D−, where D∗+→π+D0 with D0→K−π+, and D− decaying via D−→μ−ν̄μ. This yields branching fraction value B(D→μνμ)=0.08−0.05−0.02+0.16+0.05%, corresponding pseudoscalar constant fD=300−150−40+180+80 MeV.
The Beijing Spectrometer (BES) Collaboration has observed exclusive pair production of ${\mathit{D}}_{\mathit{s}}$ mesons at the Electron-Positron Collider (BEPC) a center-of-mass energy 4.03 GeV. are detected in \ensuremath{\varphi}${\mathrm{\ensuremath{\pi}}}^{+}$, K\ifmmode\bar\else\textasciimacron\fi{} $^{\mathrm{*}0}$${\mathit{K}}^{+}$, and $^{0}$${\mathit{K}}^{+}$ decay modes; two fully reconstructed events yield value...
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...
To measure the combustion parameters of a solid propellant, this Letter researches fitting method for flame temperature and emissivity based on multispectral images proposes particle swarm optimization-K-means (PSO-K-means) clustering optimization algorithm image. Considering difference in radiation characteristics different regions, image is clustered, spectra regions are analyzed selected bands to inverse emissivity. On basis, applied propellant with formulations. The measurement shows...
State-of-the-art hardware compilers for FPGAs often fail to find efficient mappings of high-level designs low-level primitives, especially complex programmable primitives like digital signal processors (DSPs). New approaches apply sketch-guided program synthesis more optimally map designs. However, this approach has two primary drawbacks. First, requires the user provide sketches, which are challenging write and require domain expertise. Second, open-source SMT solvers power struggle with...
To research the influence of photoelectric response characteristics radiation thermometry, a high-temperature blackbody spectrum measurement experimental system is built by using standard furnace, optical-fiber spectrometer with silicon-based detection material. By setting different integration times spectrometer, at temperatures carried out. The parameters analyzed in detail. Therefore, linear range between fitting band and spectral intensity thermometry optimized. On this basis, through...
The absolute inclusive branching fraction of D+s→φX+ has been measured from data collected by the BES detector at a center-of-mass energy 4.03 GeV, corresponding to an integrated luminosity 22.3 pb−1. At this energy, direct pair production e+e−→D+sD−s observed. We have selected Ds candidate events reconstructing five hadronic decay modes D+s→φπ+, K0*K+, K0K+, f0π+ and K0K−π+π+ searched for φ’s in recoiling D−s. observed three 166.4 ± 31.8 events, which leads...
Author(s): Bai, JZ; Bardon, O; Bian, JG; Blum, I; Breakstone, A; Burnett, T; Chai, ZW; Chen, GP; HF; J; JC; SM; Y; YB; YQ; Cheng, BS; Cowan, RF; Cui, XZ; Ding, HL; Du, ZZ; Dunwoodie, W; Fan, XL; Fang, Fero, M; Gao, CS; ML; SQ; Gratton, P; Gu, JH; SD; WX; YF; Guo, YN; Han, SW; Harris, FA; He, JT; Hitlin, DG; Hu, GY; JL; QH; XQ; Huang, XP; YZ; Izen, JM; Jia, QP; Jiang, CH; Jin, S; Jones, L; Kang, SH; Ke, ZJ; Kelsey, MH; Kim, BK; Kong, D; Lai, Lan, HB; Lang, PF; Lankford, Li, PQ; Q; RB; WD; WG;...