A5103092140- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Computational Physics and Python Applications
- Black Holes and Theoretical Physics
- Atomic and Subatomic Physics Research
- X-ray Diffraction in Crystallography
- Medical Imaging Techniques and Applications
- Crystallization and Solubility Studies
- Cosmology and Gravitation Theories
- Nuclear physics research studies
- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Stochastic processes and statistical mechanics
- Astrophysical Phenomena and Observations
- Particle Accelerators and Free-Electron Lasers
- International Science and Diplomacy
- Multimodal Machine Learning Applications
- Silk-based biomaterials and applications
- Video Surveillance and Tracking Methods
- Spectral Theory in Mathematical Physics
- Pediatric Hepatobiliary Diseases and Treatments
Wuhan University
2020-2025
Nantong University
2024
University of Chinese Academy of Sciences
2022-2024
Chinese Academy of Sciences
2023
University of Groningen
2023
Institute of High Energy Physics
2021-2023
Linyi People's Hospital
2022
Yunnan Observatories
2019-2021
Shanghai Jiao Tong University
2021
Zhengzhou University
2020
We search for the rare decay <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msup><a:mi>B</a:mi><a:mo>+</a:mo></a:msup><a:mo stretchy="false">→</a:mo><a:msup><a:mi>K</a:mi><a:mo>+</a:mo></a:msup><a:mi>ν</a:mi><a:mover accent="true"><a:mi>ν</a:mi><a:mo stretchy="false">¯</a:mo></a:mover></a:math> in a <f:math xmlns:f="http://www.w3.org/1998/Math/MathML" display="inline"><f:mn>362</f:mn><f:mtext> </f:mtext><f:mtext>...
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....
Abstract The integrated luminosities of data samples collected in the BESIII experiment 2016–2017 at center-of-mass energies between 4.19 and 4.28 GeV are measured with a precision better than 1% by analyzing large-angle Bhabha scattering events. old datasets 2010–2014 updated considering corrections related to detector performance, offsetting effect newly discovered readout errors electromagnetic calorimeter, which can haphazardly occur.
Using a sample of (10.09±0.04)×10^{9} J/ψ events collected with the BESIII detector operating at BEPCII storage ring, partial wave analysis decay J/ψ→γηη^{'} is performed. The first observation an isoscalar state exotic quantum numbers J^{PC}=1^{-+}, denoted as η_{1}(1855), reported in process J/ψ→γη_{1}(1855) η_{1}(1855)→ηη^{'}. Its mass and width are measured to be (1855±9_{-1}^{+6}) MeV/c^{2} (188±18_{-8}^{+3}) MeV, respectively, where uncertainties statistical second systematic, its...
Based on 10 billion J/ψ events collected at the BESIII experiment, a search for CP violation in Λ decay is performed difference between CP-odd parameters α_{-} Λ→pπ^{-} and α_{+} Λ[over ¯]→p[over ¯]π^{+} by using process e^{+}e^{-}→J/ψ→ΛΛ[over ¯]. With five-dimensional fit to full angular distributions of daughter baryon, most precise values are determined be α_{-}=0.7519±0.0036±0.0024 α_{+}=-0.7559±0.0036±0.0030, respectively. The ¯] averaged value parameter extracted...
We search for an axion-like particle (ALP) $a$ through the process $\psi(3686)\rightarrow\pi^+\pi^-J/\psi$, $J/\psi\rightarrow\gamma a$, $a\rightarrow\gamma\gamma$ in a data sample of $(2.71\pm0.01)\times10^9$ $\psi(3686)$ events collected by BESIII detector. No significant ALP signal is observed over expected background, and upper limits on branching fraction decay a$ ALP-photon coupling constant $g_{a\gamma\gamma}$ are set at 95% confidence level mass range $0.165\leq...
We study the process e^{+}e^{-}→Λ_{c}^{+}Λ[over ¯]_{c}^{-} at twelve center-of-mass energies from 4.6119 to 4.9509 GeV using data samples collected by BESIII detector BEPCII collider. The Born cross sections and effective form factors (|G_{eff}|) are determined with unprecedented precision after combining single double-tag methods based on decay Λ_{c}^{+}→pK^{-}π^{+}. Flat around 4.63 obtained no indication of resonant structure Y(4630), as reported Belle, is found. In addition, oscillatory...
Based on 4.4 fb−1 of e+e− annihilation data collected at the center-of-mass energies between 4.60 and 4.70 GeV with BESIII detector BEPCII collider, pure W-boson-exchange decay Λc+→Ξ0K+ is studied a full angular analysis. The corresponding asymmetry measured for first time to be αΞ0K+=0.01±0.16(stat)±0.03(syst). This result reflects noninterference effect S- P-wave amplitudes. phase shift amplitudes has two solutions, which are δp−δs=−1.55±0.25(stat)±0.05(syst) rad or...
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.
The cross sections of $e^+e^- \rightarrow K^+K^-J/\psi$ at center-of-mass energies from 4.127 to 4.600~GeV are measured based on 15.6 fb$^{-1}$ data collected with the BESIII detector operating BEPCII storage ring. Two resonant structures observed in line shape sections. mass and width first structure be ($4225.3\pm2.3\pm21.5$) MeV ($72.9\pm6.1\pm30.8$)~MeV, respectively. They consistent those established $Y(4230)$. second is for time a statistical significance greater than 8$\sigma$,...
Based on a sample of (10.09$\pm$0.04)$\times$10$^{9}$ $J/\psi$ events collected with the BESIII detector operating at BEPCII storage ring, partial wave analysis decay $J/\psi \rightarrow \gamma\eta\eta'$ is performed. An isoscalar state exotic quantum numbers $J^{PC}=1^{-+}$, denoted as $\eta_1(1855)$, has been observed for first time statistical significance larger than 19$\sigma$. Its mass and width are measured to be (1855$\pm$9$_{-1}^{+6}$)~MeV/$c^{2}$ (188$\pm$18$_{-8}^{+3}$)~MeV,...
The Born cross sections of the process $e^{+}e^{-}\to D^{*0}D^{*-}\pi^{+}$ at center-of-mass energies from 4.189 to 4.951 GeV are measured for first time. data samples used correspond an integrated luminosity $17.9\,{\rm fb}^{-1}$ and were collected by BESIII detector operating BEPCII storage ring. Three enhancements around 4.20, 4.47 4.67 visible. resonances have masses $4209.6\pm4.7\pm5.9\,{\rm MeV}/c^{2}$, $4469.1\pm26.2\pm3.6\,{\rm MeV}/c^{2}$ $4675.3\pm29.5\pm3.5\,{\rm widths...
The process e^{+}e^{-}→D_{s}^{*+}D_{s}^{*-} is studied with a semi-inclusive method using data samples at center-of-mass energies from threshold to 4.95 GeV collected the BESIII detector operating Beijing Electron Positron Collider. Born cross sections of are measured for first time high precision in this energy region. Two resonance structures observed energy-dependent around 4.2 and 4.4 GeV. By fitting coherent sum three Breit-Wigner amplitudes one phase-space amplitude, two significant...
The J/ψ→Ξ0¯Ξ0 process and subsequent decays are investigated using (10087±44)×106 J/ψ events collected at the BESIII experiment. decay parameters of Ξ0 ¯Ξ0 simultaneously measured to be αΞ=−0.3750±0.0034±0.0016, ¯αΞ=0.3790±0.0034±0.0021, ϕΞ=0.0051±0.0096±0.0018 rad, ¯ϕΞ=−0.0053±0.0097±0.0019 rad with unprecedented accuracies, where first second uncertainties statistical systematic, respectively. most precise values for CP asymmetry observables obtained AΞCP=(−5.4±6.5±3.1)×10−3...
Based on a sample of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo stretchy="false">(</a:mo><a:mn>448.1</a:mn><a:mo>±</a:mo><a:mn>2.9</a:mn><a:mo stretchy="false">)</a:mo><a:mo>×</a:mo><a:msup><a:mrow><a:mn>10</a:mn></a:mrow><a:mrow><a:mn>6</a:mn></a:mrow></a:msup></a:mrow></a:math> <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mrow><e:mi>ψ</e:mi><e:mo stretchy="false">(</e:mo><e:mn>3686</e:mn><e:mo...
During the 2016-17 and 2018-19 running periods, BESIII experiment collected 7.5~fb$^{-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 $e^+e^-$ collision data at ten center-of-mass energies between 2.644 and 3.080 GeV collected with the BESIII detector BEPCII corresponding to an integrated luminosity of about 500 pb$^{-1}$, we measure cross sections effective form factors for process $e^{+}e^{-}\rightarrow\Xi^{0}\bar{\Xi}^{0}$ utilizing a single-tag method. A fit section pQCD-driven power function is performed, from which no significant resonance or threshold enhancement observed. In addition, ratio processes...
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.
The study of the Cabibbo-favored semileptonic decay Λ_{c}^{+}→Λe^{+}ν_{e} is reported using a 4.5 fb^{-1} data sample e^{+}e^{-} annihilations collected at center-of-mass energies ranging from 4.600 GeV to 4.699 with BESIII detector BEPCII collider. branching fraction measured be B(Λ_{c}^{+}→Λe^{+}ν_{e})=(3.56±0.11_{stat}±0.07_{syst})%, which most precise measurement date. Furthermore, we perform an investigation internal dynamics in Λ_{c}^{+}→Λe^{+}ν_{e}. We provide first direct comparisons...