A5015529510- 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
- Black Holes and Theoretical Physics
- Nuclear physics research studies
- Atomic and Subatomic Physics Research
- Medical Imaging Techniques and Applications
- Particle Detector Development and Performance
- Particle Accelerators and Free-Electron Lasers
- Scientific Research and Discoveries
- Cosmology and Gravitation Theories
- Nuclear reactor physics and engineering
- Distributed and Parallel Computing Systems
- CCD and CMOS Imaging Sensors
- Spectroscopy and Quantum Chemical Studies
- Education and Character Development
- Molecular spectroscopy and chirality
- Neural Networks and Applications
- Online Learning Methods and Innovations
- Astrophysics and Cosmic Phenomena
- International Science and Diplomacy
- Polymer crystallization and properties
Liaoning Normal University
2020-2025
Dalian Maritime University
2024
University of Turin
2024
Xinyang Normal University
2023
University of Hawaiʻi at Mānoa
2023
University of Hawaii System
2023
Kurchatov Institute
2023
Yunnan University
2023
South China Normal University
2023
Moscow Institute of Physics and Technology
2023
At sufficiently high temperature and energy density, nuclear matter undergoes a transition to phase in which quarks gluons are not confined: the Quark-Gluon Plasma (QGP) [1]. Such an extreme state of strongly-interacting QCD (Quantum Chromo-Dynamics) is produced laboratory with high-energy collisions heavy nuclei, where enhanced production strange hadrons observed [2-6]. Strangeness enhancement, originally proposed as signature QGP formation [7], more pronounced for multi-strange baryons....
The production cross sections for prompt charmed mesons $$\mathrm{D^0}$$ , $$\mathrm{D^+}$$ $$\mathrm{D^{*+}}$$ and $$\mathrm{D_s^+}$$ were measured at mid-rapidity in proton–proton collisions a centre-of-mass energy $$\sqrt{s}=7~{\mathrm {TeV}}$$ with the ALICE detector Large Hadron Collider (LHC). D reconstructed from their decays $$\mathrm{D}^0 \rightarrow \mathrm{K}^-\pi ^+$$ $$\mathrm{D}^+\rightarrow ^+\pi $$\mathrm{D}^{*+} \mathrm{D}^0 \pi $$\mathrm{D_s^{+}\rightarrow \phi...
We present the charged-particle pseudorapidity density in Pb–Pb collisions at sNN=5.02TeV centrality classes measured by ALICE. The measurement covers a wide range from −3.5 to 5, which is sufficient for reliable estimates of total number charged particles produced collisions. For most central (0–5%) we find 21400±1300, while peripheral (80–90%) 230±38. This corresponds an increase (27±4)% over results sNN=2.76TeV previously reported energy dependence heavy-ion found obey modified power-law...
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 <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo stretchy="false">(</a:mo><a:mn>10</a:mn><a:mn>087</a:mn><a:mo>±</a:mo><a:mn>44</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:mtext> </a:mtext><a:mtext> </a:mtext><a:mi>J</a:mi><a:mo>/</a:mo><a:mi>ψ</a:mi></a:mrow></a:math> events collected with the BESIII detector, a partial wave analysis of decay <e:math...
We perform a study of the <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msub><a:mi>χ</a:mi><a:mrow><a:mi>c</a:mi><a:mn>1</a:mn></a:mrow></a:msub><a:mo stretchy="false">(</a:mo><a:mn>3872</a:mn><a:mo stretchy="false">)</a:mo></a:math> line shape using data samples <e:math xmlns:e="http://www.w3.org/1998/Math/MathML"...
Using 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>10087</a:mn><a:mo>±</a:mo><a:mn>44</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:mtext> </a:mtext><a:mtext> </a:mtext><a:mi>J</a:mi><a:mo>/</a:mo><a:mi>ψ</a:mi></a:mrow></a:math> events, which is about 45 times larger than that was previously analyzed, further investigation...
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...
This letter presents the first measurement of jet mass in Pb-Pb and p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV 5.02 TeV, respectively. Both energy are expected to be sensitive quenching hot Quantum Chromodynamics (QCD) matter created nuclear collider energies. Jets reconstructed from charged particles using anti-$k_{\rm T}$ algorithm resolution parameter $R 0.4$. The jets measured pseudorapidity range $|\eta_{\rm{jet}}|<0.5$ three intervals transverse momentum between 60 GeV/$c$ 120...
The second and the third order anisotropic flow, V2 V3, are mostly determined by corresponding initial spatial anisotropy coefficients, ε2 ε3, in density distribution. In addition to their dependence on same coefficient, higher Vn (n>3), can also have a significant contribution from lower which leads mode-coupling effects. this Letter we investigate linear non-linear modes flow for n=4, 5, 6 with ALICE detector at Large Hadron Collider. measurements done particles pseudorapidity range...
The elliptic, triangular, quadrangular and pentagonal anisotropic flow coefficients for π±, K± $$ \mathrm{p}+\overline{\mathrm{p}} in Pb-Pb collisions at \sqrt{s_{\mathrm{NN}}}=2.76 TeV were measured with the ALICE detector Large Hadron Collider. results obtained Scalar Product method, correlating identified hadrons reference particles from a different pseudorapidity region. Effects not related to common event symmetry planes (non-flow) estimated using correlations pp subtracted measurement....
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...