A5001548753- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Computational Physics and Python Applications
- Atomic and Subatomic Physics Research
- Black Holes and Theoretical Physics
- Medical Imaging Techniques and Applications
- Particle Detector Development and Performance
- Wind Energy Research and Development
- Advanced NMR Techniques and Applications
- Cosmology and Gravitation Theories
- Geothermal Energy Systems and Applications
- Heat and Mass Transfer in Porous Media
- Social Acceptance of Renewable Energy
- Petroleum Processing and Analysis
- Electric and Hybrid Vehicle Technologies
- Aerogels and thermal insulation
- Radiative Heat Transfer Studies
- Scientific Measurement and Uncertainty Evaluation
- Integrated Energy Systems Optimization
- Supercapacitor Materials and Fabrication
- Islanding Detection in Power Systems
- Advancements in Photolithography Techniques
Nanjing University
2018-2024
Shanghai Electric (China)
2024
Institute of High Energy Physics
2019-2021
Washington State University
1999
We report a study of the processes e+e−→K+D−sD*0 and K+D*−sD0 based on e+e− annihilation samples collected with BESIII detector operating at BEPCII five center-of-mass energies ranging from 4.628 to 4.698 GeV total integrated luminosity 3.7 fb−1. An excess events over known contributions conventional charmed mesons is observed near D−sD*0 D*−sD0 mass thresholds in K+ recoil-mass spectrum for √s=4.681 GeV. The structure matches mass-dependent-width Breit-Wigner line shape, whose pole width...
The process of $e^+e^- \rightarrow p\bar{p}$ is studied at 22 center-of-mass energy points ($\sqrt{s}$) from 2.00 to 3.08 GeV, exploiting 688.5~pb$^{-1}$ data collected with the BESIII detector operating BEPCII collider. Born cross section~($\sigma_{p\bar{p}}$) measured energy-scan technique and it found be consistent previously published data, but much improved accuracy. In addition, electromagnetic form-factor ratio ($|G_{E}/G_{M}|$) value effective ($|G_{\rm{eff}}|$), electric ($|G_E|$)...
Abstract Using inclusive decays of , a precise determination the number events collected with BESIII detector was performed. For two data sets taken in 2009 and 2012, numbers were recalculated to be respectively; these are good agreement previous measurements. sample 2017–2019, determined . The total where uncertainty is dominated by systematic effects, statistical negligible.
Abstract From December 2019 to June 2021, the BESIII experiment collected approximately 5.85 fb −1 of data at center-of-mass energies between 4.61 and 4.95 GeV. This is highest collision energy BEPCII has reached date. The accumulated annihilation samples are useful for studying charmonium(-like) states charmed-hadron decays. By adopting a novel method analyzing production pairs in annihilation, measured with precision 0.6 MeV. Integrated luminosities better than 1% by events large-angle...
Using a sample of $1.31\times10^9$ $J/\psi$ events collected with the BESIII detector at electron-positron collider BEPCII, we analyse full $J/\psi \to$ $\Xi^-\overline{\Xi}^+$, $\Xi^-\to \Lambda \pi^-$, $\Lambda\to p\pi^-$, $\overline{\Xi}^+\to\overline{\Lambda}\pi^+$, $\overline{\Lambda}\to\overline{p}\pi^+$ decay chain. A new method, exploiting fact that $\Xi^-\overline{\Xi}^+$ pair is entangled and sequentially decaying, where complete chains are reconstructed, applied for first time....
The cross section of the process ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\omega}{\ensuremath{\chi}}_{c0}$ is measured at center-of-mass energies from $\sqrt{s}=4.178$ to 4.278 GeV using a data sample $7\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected with BESIII detector operating BEPCII storage ring. dependence on $\sqrt{s}$ shows resonant structure mass...
From 1310.6×10^{6} J/ψ and 448.1×10^{6} ψ(3686) events collected with the BESIII experiment, we report first observation of Σ^{+} Σ[over ¯]^{-} spin polarization in e^{+}e^{-}→J/ψ[ψ(3686)]→Σ^{+}Σ[over decays. The relative phases form factors ΔΦ have been measured to be (-15.5±0.7±0.5)° (21.7±4.0±0.8)° data, respectively. nonzero value allows for a direct simultaneous measurement decay asymmetry parameters Σ^{+}→pπ^{0}(α_{0}=-0.998±0.037±0.009) ¯]^{-}→p[over ¯]π^{0}(α[over...
The Born cross sections of the $e^{+}e^{-}\to\Sigma^{+}\bar{\Sigma}^{-}$ and $e^{+}e^{-}\to\Sigma^{-}\bar{\Sigma}^{+}$ processes are determined with high precision for center-of-mass energy from 2.3864 to 3.0200 GeV BESIII detector. Nonzero near threshold observed. resulting ratio effective form factors $\Sigma^{+}$ $\Sigma^{-}$ is consistent 3, agreeing incoherent sum squared charges valence quarks, but disagreeing various theoretical predictions. In addition, ratios electric magnetic...
The electromagnetic process $e^{+}e^{-}\to p\bar{p}$ is studied with the initial-state-radiation technique using 7.5 fb$^{-1}$ of data collected by BESIII experiment at seven energy points from 3.773 to 4.600 GeV. Born cross section and effective form factor proton are measured production threshold 3.0 GeV/$c^{2}$ $p\bar{p}$ invariant-mass spectrum. ratio electric magnetic factors determined analysis proton-helicity angular distribution.
Crucial inputs for a variety of $CP$-violation studies can be determined through the analysis pairs quantum-entangled neutral $D$ mesons, which are produced in decay $\ensuremath{\psi}(3770)$ resonance. The relative strong-phase parameters between ${D}^{0}$ and ${\overline{D}}^{0}$ decays ${D}^{0}\ensuremath{\rightarrow}{K}_{S,L}^{0}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ studied using $2.93\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ ${e}^{+}{e}^{\ensuremath{-}}$...
Cross sections of the process e+e−→π0π0J/ψ at center-of-mass energies between 3.808 and 4.600 GeV are measured with high precision by using 12.4 fb−1 data samples collected BESIII detector operating BEPCII collider facility. A fit to energy-dependent cross confirms existence charmoniumlike state Y(4220). The mass width Y(4220) determined be (4220.4±2.4±2.3) MeV/c2 (46.2±4.7±2.1) MeV, respectively, where first uncertainties statistical second systematic. consistent those in e+e−→π+π−J/ψ....
The Born cross-sections and effective form factors for process $e^+e^-\to\Xi^-\bar{\Xi}^+$ are measured at eight center-of-mass energies between 2.644 3.080 GeV, using a total integrated luminosity of 363.9 pb$^{-1}$ $e^+e^-$ collision data collected with the BESIII detector BEPCII. After performing fit to cross-section $e^+e^-\to\Xi^-\bar{\Xi}^+$, no significant threshold effect is observed.
During the 2016-17 and 2018-19 running periods, BESIII experiment collected 7.5~fb$^{-1}$ of $e^+e^-$ collision data at center-of-mass energies ranging from 4.13 to 4.44 GeV. These samples are primarily used for study excited charmonium charmoniumlike states. By analyzing di-muon process $e^{+}e^{-} \to (\gamma_{\rm ISR/FSR}) \mu^{+}\mu^{-}$, we measure with a precision 0.6 MeV. Through run-by-run study, find that were stable throughout most data-taking period.
The singly Cabibbo-suppressed decay Λ_{c}^{+}→nπ^{+} is observed for the first time with a statistical significance of 7.3σ by using 3.9 fb^{-1} e^{+}e^{-} collision data collected at center-of-mass energies between 4.612 and 4.699 GeV BESIII detector BEPCII. branching fraction measured to be (6.6±1.2_{stat}±0.4_{syst})×10^{-4}. By taking upper limit fractions Λ_{c}^{+}→pπ^{0} from Belle experiment, ratio calculated larger than 7.2 90% confidence level, which disagrees most predictions...
Using $e^+e^-$ annihilation data corresponding to a total integrated luminosity of 6.32 $\rm fb^{-1}$ collected at center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we perform an amplitude analysis decay $D_{s}^{+} \to K_{S}^{0}K_{S}^{0}\pi^{+}$ for first time. An enhancement is observed in $K_{S}^{0}K_{S}^{0}$ mass spectrum near 1.7 GeV/$c^2$, which was not seen K^+K^-\pi^{+}$ earlier work, implying existence isospin one partner $f_0(1710)$. The branching...
Using a total of 9.0 fb^{-1} e^{+}e^{-} collision data with center-of-mass energies between 4.15 and 4.30 GeV collected by the BESIII detector, we search for processes e^{+}e^{-}→γX(3872) X(3872)→π^{0}χ_{cJ} J=0, 1, 2. We report first observation X(3872)→π^{0}χ_{c1}, new decay mode X(3872), statistical significance more than 5σ all systematic fit variations. Normalizing to previously established process X(3872)→π^{+}π^{-}J/ψ, find...
The Born cross section for the process $e^+ e^- \to p \bar $ is measured using initial state radiation technique with an undetected photon. This analysis based on datasets corresponding to integrated luminosity of 7.5 fb$^{-1}$, collected BESIII detector at BEPCII collider center mass energies between 3.773 and 4.600 GeV. proton effective form factor are determined in $p\bar p$ invariant range 2.0 3.8 GeV/$c^2$ divided into 30 intervals. ratio ($|G_E|/|G_M|$) 3 intervals 3.0 GeV/$c^2$.
Using a 3.19 fb^{-1} data sample collected at an e^{+}e^{-} center-of-mass energy of E_{cm}=4.178 GeV with the BESIII detector, we measure branching fraction leptonic decay D_{s}^{+}→μ^{+}ν_{μ} to be B_{D_{s}^{+}→μ^{+}ν_{μ}}=(5.49±0.16_{stat}±0.15_{syst})×10^{-3}. Combining our masses D_{s}^{+} and μ^{+} lifetime D_{s}^{+}, determine f_{D_{s}^{+}}|V_{cs}|=246.2±3.6_{stat}±3.5_{syst} MeV. c→s quark mixing matrix element |V_{cs}| determined from global standard model fit, evaluate constant...
The process e+e−→ϕη′ has been studied for the first time in detail using data sample collected with BESIII detector at BEPCII collider center of mass energies from 2.05 to 3.08 GeV. A resonance quantum numbers JPC=1−− is observed M=(2177.5±4.8(stat)±19.5(syst))MeV/c2 and width Γ=(149.0±15.6(stat)±8.9(syst)) MeV a statistical significance larger than 10σ, including systematic uncertainties. If structure identified ϕ(2170), then ratio partial between ϕη′ by ϕη BABAR...
The cross sections of the process $e^{+}e^{-} \to \eta J/\psi$ at center-of-mass energies ($\sqrt{s}$) between 3.81 and 4.60 GeV are measured with high precision by using data samples collected BESIII detector operating BEPCII storage ring. Three structures observed analyzing lineshape sections, a maximum-likelihood fit including three resonances is performed assuming lowest lying structure $\psi(4040)$. For other resonances, we obtain masses $(4218.7 \pm 4.0 2.5)$ $(4380.4 14.2 1.8)$...
Using e^{+}e^{-} annihilation data corresponding to an integrated luminosity of 6.32 fb^{-1} collected at center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we perform first amplitude analysis decay D_{s}^{+}→K_{S}^{0}K^{+}π^{0} determine relative branching fractions phases for intermediate processes. We observe a_{0}-like state mass 1.817 in its K_{S}^{0}K^{+} time. In addition, measure ratio {B[D_{s}^{+}→K[over ¯]^{*}(892)^{0}K^{+}]/B[D_{s}^{+}→K[over...
Using a sample of $(448.1~\pm~2.9)$ $\times 10^{6}$ $\psi(3686)$ decays collected with the BESIII detector at BEPCII, we report an observation $\Xi^{-}$ transverse polarization significance $7.3 \sigma$ in decay $\psi(3686)\rightarrow\Xi^{-}\bar\Xi^{+}$ ($\Xi^{-}\rightarrow\pi^{-}\Lambda$, $\bar\Xi^{+}\rightarrow\pi^{+}\bar\Lambda$, $\Lambda\to p\pi^{-}$, $\bar\Lambda\to\bar{p}\pi^{+}$). The relative phase electric and magnetic form factors is determined to be $\Delta\Phi = (0.667 \pm 0.111...
Based on electron-positron collision data collected with the BESIII detector operating at Beijing Electron-Positron Collider II storage rings, value of R≡σ(e^{+}e^{-}→hadrons)/σ(e^{+}e^{-}→μ^{+}μ^{-}) is measured 14 center-of-mass energies from 2.2324 to 3.6710 GeV. The resulting uncertainties are less than 3.0% and dominated by systematic uncertainties.
Using a data sample of $\ensuremath{\psi}(3770)$ events collected with the BESIII detector at BEPCII corresponding to an integrated luminosity $2.9\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$, we report measurement $\mathrm{\ensuremath{\Lambda}}$ spin polarization in ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\mathrm{\ensuremath{\Lambda}}\overline{\mathrm{\ensuremath{\Lambda}}}$ $\sqrt{s}=3.773\text{ }\mathrm{GeV}$. The significance is found be $2\ensuremath{\sigma}$ including...