Y. Y. Duan
A5103201454- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Black Holes and Theoretical Physics
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Medical Imaging Techniques and Applications
- advanced mathematical theories
- Nuclear physics research studies
- Particle Detector Development and Performance
- Stochastic processes and statistical mechanics
- Machine Learning in Healthcare
- Advanced Algebra and Geometry
- Algorithms and Data Compression
- Brain Tumor Detection and Classification
- Expert finding and Q&A systems
- Plant-derived Lignans Synthesis and Bioactivity
- Markov Chains and Monte Carlo Methods
- Advanced Fiber Optic Sensors
- Adhesion, Friction, and Surface Interactions
- Bayesian Modeling and Causal Inference
- Metallic Glasses and Amorphous Alloys
Soochow University
2024-2025
Lanzhou University
2024-2025
Northeastern University
2025
China National Petroleum Corporation (China)
2024
Nanjing Agricultural University
2024
Ministry of Agriculture and Rural Affairs
2024
Cochlear (Australia)
2003
The beta decay of the lightest charmed baryon $${\Lambda }_{c}^{+}$$ provides unique insights into fundamental mechanism strong and electro-weak interactions, serving as a testbed for investigating non-perturbative quantum chromodynamics constraining Cabibbo-Kobayashi-Maskawa (CKM) matrix parameters. This article presents first observation Cabibbo-suppressed }_{c}^{+}\to n{e}^{+}{\nu }_{e}$$ , utilizing 4.5 fb−1 electron-positron annihilation data collected with BESIII detector. A novel...
Based on 6.1 fb^{-1} of e^{+}e^{-} annihilation data collected at center-of-mass energies from 4.600 to 4.843 GeV with the BESIII detector BEPCII collider, a partial wave analysis Λ_{c}^{+}→Λπ^{+}η is performed, and branching fractions decay asymmetry parameters intermediate processes are determined. The process Λ_{c}^{+}→Λa_{0}(980)^{+} observed for first time, evidence pentaquark candidate Σ(1380)^{+} decaying into Λπ^{+} found statistical significance larger than 3σ mass width fixed...
To address the challenges of slow convergence speed, poor precision, and getting stuck in local optima for unmanned aerial vehicle (UAV) three-dimensional path planning, this paper proposes a planning method based on an Improved Human Evolution Optimization Algorithm (IHEOA). First, mathematical model is used to construct terrain environment, multi-constraint cost established, framing as multidimensional function optimization problem. Second, recognizing sensitivity population diversity...
Studies are performed of the Cabibbo-favored decay <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msubsup><a:mrow><a:mi mathvariant="normal">Λ</a:mi></a:mrow><a:mrow><a:mi>c</a:mi></a:mrow><a:mrow><a:mo>+</a:mo></a:mrow></a:msubsup><a:mo stretchy="false">→</a:mo><a:mi...
One of the main goals studying semileptonic decays in flavor physics is to gain a better understanding hadronic transitions nonperturbative region Quantum Chromodynamics. This involves measuring Cabibbo-Kobayashi-Maskawa matrix elements, form factors, and comparing them with theoretical predictions. We report first study decay <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msup><a:mrow><a:mi>D</a:mi></a:mrow><a:mrow><a:mn>0</a:mn></a:mrow></a:msup><a:mo...
A search for $\eta_c(2S)\to p\bar{p}K^+K^-$, together with measurement of branching fractions $\chi_{cJ(J=0,1,2)}\to p\bar{p}K^+K^-$ in the $\psi(3686) \to \gamma \eta_c(2S)$ and \chi_{cJ}$ radiative decays, is performed $(2712.4\pm14.3)\times 10^6$ $\psi(3686)$ events collected BESIII detector at BEPCII collider. An evidence found, a significance $3.3\sigma$. The product fraction $\mathcal{B}[\psi(3686)\to\gamma\eta_c(2S)]\cdot\mathcal{B}[\eta_c(2S)\to p\bar{p}K^+K^-]$ determined to be...
Based on $(2712.4 \pm 14.3)\times 10^6$ $\psi(3686)$ events collected at the BESIII detector operating BEPCII collider, we present first observation of decay $\psi(3686) \to K^{-}\Lambda(1520)\bar{\Xi}^{+} + c.c.$. The product branching fraction ${\cal B}[\psi(3686) c.c.] \times {\cal B}[\Lambda(1520) pK^{-}]$ is measured to be $(9.5 0.8 1.1) 10^{-7}$, where uncertainty statistical and second systematic.
We perform the first amplitude analysis of D_{s}^{+}→π^{+}π^{+}π^{-}π^{0} decays based on data samples electron-positron collisions recorded with BESIII detector at center-of-mass energies between 4.128 and 4.226 GeV, corresponding to an integrated luminosity 7.33 fb^{-1}. report observation D_{s}^{+}→f_{0}(980)ρ(770)^{+} a statistical significance greater than 10σ determine branching fractions B(D_{s}^{+}→π^{+}π^{+}π^{-}π^{0}|_{non-η})=(2.04±0.08_{stat}±0.05_{syst})%...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo stretchy="false">(</a:mo><a:mn>27.12</a:mn><a:mo>±</a:mo><a:mn>0.14</a:mn><a:mo stretchy="false">)</a:mo><a:mo>×</a:mo><a:msup><a:mrow><a:mn>10</a:mn></a:mrow><a:mrow><a:mn>8</a:mn></a:mrow></a:msup></a:mrow></a:math> <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mrow><e:mi>ψ</e:mi><e:mo stretchy="false">(</e:mo><e:mn>2</e:mn><e:mi>S</e:mi><e:mo...
We study the electromagnetic Dalitz decay $J/\psi \to e^+e^- \pi^0$ using $(10087 \pm 44) \times 10^6$ $J/\psi$ events collected by \bes detector. The di-electron-invariant-mass dependent transition form factor of this is explored for first time. A significant resonant structure corresponding to $\rho/\omega$ resonance observed, which cannot be described existing theoretical models, due contributions from isospin-conserving \rho and isospin-volating \omega decays. observed $\rho$--$\omega$...
We present the first amplitude analysis and branching fraction measurement of decay $D^+_s\to \pi^+\pi^+\pi^-\pi^0\pi^0$, using $e^+e^-$ collision data collected with BESIII detector at center-of-mass energies between 4.128 4.226 GeV corresponding to an integrated luminosity 7.33 fb$^{-1}$, report observation pure $W$-annihilation $D_s^+ \to \omega\rho^+$ a $(0.99\pm0.08_{\rm stat}\pm0.07_{\rm syst})\%$. In comparison low significance $\mathcal{D}$ wave in \phi\rho^+$, dominance over...
We search for the leptonic decay $D^+\to e^+\nu_{e}$ using an $e^+e^-$ collision data sample with integrated luminosity of 20.3~fb$^{-1}$ collected BESIII detector at center-of-mass energy 3.773~GeV. No significant signal is observed and upper limit on branching fraction set as $9.7 \times 10^{-7}$, 90\% confidence level. Our order magnitude smaller than previous this mode.
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo stretchy="false">(</a:mo><a:mn>2.712</a:mn><a:mo>±</a:mo><a:mn>0.014</a:mn><a:mo stretchy="false">)</a:mo><a:mo>×</a:mo><a:msup><a:mrow><a:mn>10</a:mn></a:mrow><a:mrow><a:mn>9</a:mn></a:mrow></a:msup><a:mtext> </a:mtext><a:mtext> </a:mtext><a:mi>ψ</a:mi><a:mo stretchy="false">(</a:mo><a:mn>2</a:mn><a:mi>S</a:mi><a:mo stretchy="false">)</a:mo></a:mrow></a:math> events collected with the BESIII detector...
Using a sample of $(10087\pm44)\times10^{6}$ $J/\psi$ events accumulated with the BESIII detector, we analyze decays $\eta\rightarrow\pi^+\pi^-l^+l^-$ ($l=e$ or $\mu$) via process $J/\psi\rightarrow\gamma\eta$. The branching fraction $\eta\rightarrow\pi^+\pi^-e^+e^-$ is measured to be $\mathcal{B}(\eta\rightarrow\pi^+\pi^-e^+e^-)=(3.07\pm0.12_{\rm{stat.}}\pm0.19_{\rm{syst.}}) \times10^{-4}$. No signal are observed for $\eta\rightarrow\pi^{+}\pi^{-}\mu^{+}\mu^{-}$ decay, leading an upper...
The <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>C</a:mi><a:mi>P</a:mi></a:math>-even fractions (<c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:msub><c:mi>F</c:mi><c:mo>+</c:mo></c:msub></c:math>) of the decays <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mrow><e:msup><e:mrow><e:mi>D</e:mi></e:mrow><e:mrow><e:mn>0</e:mn></e:mrow></e:msup><e:mo...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mn>7.9</a:mn><a:mrow><a:mi mathvariant="normal">f</a:mi><a:msup><a:mi mathvariant="normal">b</a:mi><a:mrow><a:mo>−</a:mo><a:mn>1</a:mn></a:mrow></a:msup></a:mrow></a:math> of <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:msup><e:mi>e</e:mi><e:mo>+</e:mo></e:msup><e:msup><e:mi>e</e:mi><e:mo>−</e:mo></e:msup></e:math> collision data collected at <g:math...
Using data samples collected by the \mbox{BESIII} detector located at Beijing Electron Positron Collider, cross sections of process $e^+e^-\to f_{1}(1285)\pi^+\pi^-$ are measured forty-five center-of-mass energies from $3.808$ to $4.951 {\rm GeV}$. An investigation on section line shape is performed, and no significant structure observed.
Using $\psi(3686)\rightarrow \pi^{0} h_{c}$ decays from a data sample of $(27.12\pm0.14)\times10^{8}$ $\psi(3686)$ events collected by the BESIII detector at BEPCII collider, $h_c$ radiative to $\gamma\pi^{+}\pi^{-},~\gamma\pi^{+}\pi^{-}\eta,~\gamma2(\pi^{+}\pi^{-})$, and $\gamma p\bar{p}$ are observed for first time, each with significance greater than $5\sigma$. The corresponding branching fractions measured. Furthermore, intermediate states below 2.8 GeV/$c^{2}$ investigated, leading...
Utilizing a dataset of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mn>6.7</a:mn><a:mtext> </a:mtext><a:mtext> </a:mtext><a:msup><a:mi>fb</a:mi><a:mrow><a:mo>−</a:mo><a:mn>1</a:mn></a:mrow></a:msup></a:math> from electron-positron collisions recorded by the BESIII detector at BEPCII storage ring, search is conducted for processes <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"...
A bstract Based on 7.33 fb − 1 of e + collision data collected by the BESIII detector operating at BEPCII collider center-of-mass energies from 4.128 to 4.226 GeV, a search for Majorana neutrino ν m is conducted in lepton-number-violating decays $$ {D}_{\textrm{s}}^{+} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mi>s</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> </mml:math> → h 0 . Here, represents K or π , and {K}_S^0 <mml:mi>K</mml:mi>...
A bstract By analyzing e + − collision data with an integrated luminosity of 7.9 fb 1 collected the BESIII detector at center-of-mass energy 3.773 GeV, branching fraction D → τ ν is determined as $$ \mathcal{B} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>B</mml:mi> </mml:math> = (9.9 ± 1.1 stat 0.5 syst ) × 10 4 . Using most precise result ( μ (3.981 0.079 0.040 [1], we determine R τ/μ Γ( )/Γ( 2.49 0.31, achieving a factor two improvement in precision compared to...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo stretchy="false">(</a:mo><a:mrow><a:mn>2712</a:mn><a:mo>±</a:mo><a:mn>14</a:mn></a:mrow><a:mo stretchy="false">)</a:mo><a:mo>×</a:mo><a:msup><a:mrow><a:mn>10</a:mn></a:mrow><a:mrow><a:mn>6</a:mn></a:mrow></a:msup></a:mrow></a:math> <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mrow><e:mi>ψ</e:mi><e:mo stretchy="false">(</e:mo><e:mn>2</e:mn><e:mi>S</e:mi><e:mo...
By analyzing 7.93 $\rm fb^{-1}$ of $e^+e^-$ collision data collected at the center-of-mass energy 3.773 GeV with BESIII detector operated BEPCII collider, we report observation semimuonic decays $D^+\to \bar K_1(1270)^0\mu^+\nu_\mu$ and $D^0\to K_1(1270)^-\mu^+\nu_\mu$ statistical significances $12.5\sigma$ $6.0\sigma$, respectively. Their decay branching fractions are determined to be ${\mathcal B}[D^{+}\to \bar{K}_1(1270)^0 \mu^{+}\nu_{\mu}]=(2.36\pm0.20^{+0.18}_{-0.27}\pm...
Using $e^+e^-$ collision data at 13 center-of-mass energies ranging from 4.600 to 4.950 GeV collected with the BESIII detector, we search for unmeasured $e^+e^-\to K_S^0 h_c$ process . No significant signal is observed, and upper limits of Born cross sections each energy are presented.