M. L. Chen
A5025873882- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- High Entropy Alloys Studies
- Intermetallics and Advanced Alloy Properties
- Titanium Alloys Microstructure and Properties
- Advanced Algebra and Geometry
- MXene and MAX Phase Materials
- Computational Physics and Python Applications
- Advanced Computational Techniques and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Black Holes and Theoretical Physics
- Quantum chaos and dynamical systems
- High-Energy Particle Collisions Research
- Advanced Sensor and Control Systems
- Nuclear physics research studies
- Traffic Prediction and Management Techniques
- Atomic and Subatomic Physics Research
- Metal and Thin Film Mechanics
- Advanced NMR Techniques and Applications
- High-Temperature Coating Behaviors
- Additive Manufacturing Materials and Processes
Hong Kong Jockey Club
2025
Chinese University of Hong Kong
2025
Guangzhou Urban Planning Survey & Design Institute
2022
ABSTRACT Background Around 1.9 million new cases and 1 deaths worldwide were attributed to colorectal cancer (CRC) in 2020. Aims The aims of this study are assess the cost‐effectiveness a multi‐target stool DNA‐based screening strategy, COLOTECT, compared faecal immunochemical tests (FIT), colonoscopy, no Asian population inform more choices for policymakers screening. Method Results We assume that 100,000 persons aged 50 undergo annual FIT, COLOTECT testing, or colonoscopies every 10 years...
In an analysis of a 2.92~fb$^{-1}$ data sample taken at 3.773~GeV with the BESIII detector operated BEPCII collider, we measure absolute decay branching fractions to be $\mathcal B(D^0 \to K^-e^+ν_e)=(3.505\pm 0.014 \pm 0.033)\%$ and π^-e^+ν_e)=(0.295\pm 0.004\pm 0.003)\%$. From study differential rates obtain products hadronic form factor magnitude CKM matrix element $f_{+}^K(0)|V_{cs}|=0.7172\pm0.0025\pm 0.0035$ $f_{+}^π(0)|V_{cd}|=0.1435\pm0.0018\pm 0.0009$. Combining these values...
Using a data sample of 106 million $ψ(3686)$ events collected with the BESIII detector operated at BEPCII storage ring, we study for first time decay $χ_{cJ}\toϕK^{0}_S K^{\pm}π^{\mp}$ and $χ_{cJ}\toϕK^{+} K^{-}π^{0}$ in E1 radiative transition $ψ(3686)\toγχ_{cJ}$. The decays are dominated by three-body $χ_{cJ}\to ϕK^*(892)\bar{K}$. We measure branching fractions this reaction via neutral charged $K^*(892)$ find them consistent each other within expectation isospin symmetry. In $K\bar{K}π$...
We search for the rare decay $D^+\to D^0 e^+ν_{e}$, using a data set with an integrated luminosity of 2.93 $\rm fb^{-1}$ collected at $\sqrt{s}=3.773$ GeV BESIII detector operating BEPCII storage rings. No signals are observed. upper limit on branching fraction e^+ν_e$ to be $1.0\times 10^{-4}$ 90\% confidence level.
Traffic congestion is becoming increasingly prominent in urban development.It urgent to develop accurate and fast traffic flow prediction methods achieve efficient intelligent organization.Intelligent transportation system plays an important role control.It can accurately capture data form historical real-time sets.In this paper, through the in-depth analysis of electric alarm at intersection, volume information characteristics each lane intersection are obtained, neural network model based...
Based on the data sample of $448.1\times10^{6}$ $ψ(3686)$ events collected with BESIII detector at BEPCII, we present a study decays $ψ(3686)\rightarrowγχ_{cJ}\rightarrowγ\bar{p}K^{*+}Λ+c.c.$ and $ψ(3686)\rightarrow\bar{p}K^{*+}Λ+c.c.$. The branching fractions $χ_{cJ}\rightarrow\bar{p}K^{*+}Λ+c.c.$ ($J$=0, 1, 2) are measured to be $(4.8\pm0.7\pm0.5)\times10^{-4}$, $(5.0\pm0.5\pm0.4)\times10^{-4}$, $(8.2\pm0.9\pm0.7)\times10^{-4}$, respectively, where first uncertainties statistical second...
Using a $3.19~\mathrm{fb}^{-1}$ data sample collected at the $\sqrt{s}~=~4.178$ GeV with BESIII detector, we search for rare decay $D_{s}^{+} \rightarrow p \bar{p} e^{+} ν_{e} $. No significant signal is observed, and an upper limit of $\mathcal{B}(D_{s}^{+} ν_{e}) < 2.0 \times 10^{-4}$ set 90\% confidence level. This measurement useful input in understanding baryonic transition $D_{s}^{+}$ mesons.
Based on a sample of $448.1\times10^6\ ψ(3686)$ events collected with the BESIII detector, study $ψ(3686)\toΛ\barΛπ^0$ and $ψ(3686)\toΛ\barΛη$ is performed. Evidence isospin-violating decay found for first time statistical significance $3.7σ$, branching fraction $\mathcal{B}(ψ(3686)\toΛ\barΛπ^0)$ measured to be $(1.42\pm0.39\pm0.59)\times10^{-6}$, its corresponding upper limit determined $2.47\times10^{-6}$ at 90\% confidence level. A partial wave analysis shows that peak around $Λη$...
Using data taken at 29 center-of-mass energies between 4.16 and 4.70 GeV with the BESIII detector Beijing Electron Positron Collider corresponding to a total integrated luminosity of approximately 18.8 $\rm fb^{-1}$, process $e^+e^- \to p \bar{p} \bar{n} π^{-} + c.c.$ is observed for first time statistical significance $11.5σ$. The average Born cross sections in energy ranges (4.160, 4.380) GeV, (4.400, 4.600) (4.610, 4.700) are measured be $(21.5\pm5.7\pm1.2)$ fb, $(46.3\pm10.6\pm2.5)$ fb...