A5050251623- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Nuclear physics research studies
- Particle Detector Development and Performance
- Particle accelerators and beam dynamics
- Dark Matter and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Superconducting Materials and Applications
- Astrophysics and Cosmic Phenomena
- Computational Physics and Python Applications
- Methane Hydrates and Related Phenomena
- Antimicrobial Peptides and Activities
- Gamma-ray bursts and supernovae
- Nuclear Physics and Applications
- Carbon Dioxide Capture Technologies
- Metal and Thin Film Mechanics
- Radiation Detection and Scintillator Technologies
- CO2 Sequestration and Geologic Interactions
- Photocathodes and Microchannel Plates
- Sirtuins and Resveratrol in Medicine
- Synthesis and biological activity
- vaccines and immunoinformatics approaches
- Muon and positron interactions and applications
Institute of High Energy Physics
2013-2025
Chinese Academy of Sciences
2015-2024
Yunnan Normal University
2024
Virginia Tech
2018-2023
University of Chinese Academy of Sciences
2023
Shantou University
2023
Henan University of Science and Technology
2014
COMSATS University Islamabad
2014
Beihang University
2014
China Center of Advanced Science and Technology
2014
Abstract The first Water Cherenkov detector of the LHAASO experiment (WCDA-1) has been operating since April 2019. data for year have analyzed to test its performance by observing Crab Nebula as a standard candle. WCDA-1 achieves sensitivity 65 mCU per year, with statistical threshold 5 . To accomplish this, 97.7% cosmic-ray background rejection rate around 1 TeV and 99.8% 6 an approximate photon acceptance 50% is achieved after applying algorithm separate gamma-induced showers. angular...
Using data samples collected with the BESIII detector operating at BEPCII collider center-of-mass energies from 3.810 to 4.600 GeV, we perform a study of $e^{+}e^{-} \to \eta J/\psi$ and $\pi^0 J/\psi$. Statistically significant signals are observed $\sqrt{s}$ = 4.190, 4.210, 4.220, 4.230, 4.245, 4.260, 4.360 4.420 while no \pi^{0} observed. The measured energy-dependent Born cross section for shows an enhancement around 4.2~GeV. measurement is compatible earlier by Belle, but significantly...
An amplitude analysis of the $\pi^{0}\pi^{0}$ system produced in radiative $J/\psi$ decays is presented. In particular, a piecewise function that describes dynamics determined as $M_{\pi^{0}\pi^{0}}$ from an $(1.311\pm0.011)\times10^{9}$ collected by BESIII detector. The goal this to provide description scalar and tensor components $\pi^0\pi^0$ while making minimal assumptions about properties or number poles amplitude. Such model-independent allows one integrate these results with other...
To probe CP violation in the leptonic sector using GeV energy neutrino beams current and future experiments argon detectors, precise models of complex underlying antineutrino interactions are needed. The E12-14-012 experiment at Jefferson Lab Hall A was designed to perform a combined analysis inclusive exclusive electron scatterings on both ($N = 22$) titanium ($Z nuclei beams. measurement nucleus provides essential information understand scattering argon, large contribution which comes from...
The success of the ambitious programs both long- and short-baseline neutrino-oscillation experiments employing liquid-argon time-projection chambers will greatly rely on precision with which weak response argon nucleus can be estimated. In E12-14-012 experiment at Jefferson Lab Hall A, we have studied properties by scattering a high-quality electron beam off high-pressure gaseous target. Here, present measured $^{40}$Ar$(e,e^{\prime})$ double differential cross section incident energy...
The E12-14-012 experiment, performed in Jefferson Lab Hall A, has measured the $(e, e'p)$ cross section parallel kinematics using a natural argon target. Here, we report full results of analysis data set corresponding to beam energy 2.222 GeV, and spanning missing momentum range $15 \lesssim p_m 300$ MeV/c $12 E_m 80$ MeV. reduced section, determined as function $p_m$ $E_m$ with $\approx$4\% accuracy, been fitted Monte Carlo simulations involving model spectral including effects final state...
Using a data 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:mrow><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:mrow></a:math> <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mi>J</e:mi><e:mo>/</e:mo><e:mi>ψ</e:mi></e:math> events collected with the BESIII...
Using a sample of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo>∼</a:mo><a:msup><a:mrow><a:mn>10</a:mn></a:mrow><a:mrow><a:mn>10</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 by the BESIII detector at BEPCII collider, partial-wave analysis decay <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"...
The absolute branching fractions for the decays $D^0 \to K^-e ^+\nu_e$ and \pi^-e^+\nu_e$ are determined using $7584\pm 198 \pm 341$ singly tagged $\bar D^0$ sample from data collected around 3.773 GeV with BES-II detector at BEPC. In system recoiling against meson, $104.0\pm 10.9$ events $9.0 3.6$ observed. Those yield to be $BF(D^0 K^-e^+\nu_e)=(3.82 0.40\pm 0.27)%$ \pi^-e^+\nu_e)=(0.33 0.13\pm 0.03)%$. vector form factors $|f^K_+(0)| = 0.78 0.04 0.03$ $|f^{\pi}_+(0)| 0.73 0.14 0.06$....
The E12-14-012 experiment, performed in Jefferson Lab Hall A, has measured the (e,e'p) cross section parallel kinematics using a natural titanium target. Here, we report full results of analysis data set corresponding to beam energy 2.2 GeV, and spanning missing momentum range 15 <= pm 250 MeV/c 12 Em 80 MeV. reduced been with ~7% accuracy as function both energy. We compared our Monte Carlo simulations model spectral including effects final state interactions. overall agreement between is...
An enhancement near the mp+MΛ mass threshold is observed in combined pΛ¯ and p¯Λ invariant-mass spectrum from J/ψ→pK−Λ¯+c.c. decays. It can be fit with an S-wave Breit-Wigner resonance a m=2075±12(stat)±5(syst) MeV width of Γ=90±35(stat)±9(syst) MeV; it also P-wave resonance. Evidence for similar ψ′→pK−Λ¯+c.c. The analysis based on samples 5.8×107J/ψ 1.4×107ψ′ decays accumulated BES II detector at Beijing Electron-Positron Collider.Received 19 May...
The cross sections for D0D¯0 and D+D− production at 3.773 GeV have been measured with BES-II detector BEPC. These measurements are made by analyzing a data sample of about 17.3 pb−1 collected the center-of-mass energy GeV. Observed charm pair radiatively corrected to obtain tree level section DD¯ production. A measurement total hadronic is obtained from an extrapolation Ruds below open threshold.
Using data samples collected at center-of-mass energies $\sqrt{s} = 4.23$, 4.26, and 4.36 GeV with the BESIII detector operating BEPCII storage ring, we search for production of charmoniumlike state $Y(4140)$ through a radiative transition followed by its decay to $\phi J/\psi$. No significant signal is observed upper limits on $\sigma[e^{+} e^{-} \rightarrow \gamma Y(4140)] \cdot \mathcal{B}(Y(4140)\rightarrow \phi J/\psi)$ $90\%$ confidence level are estimated as 0.35, 0.28, 0.33 pb GeV,...
The E12-14-012 experiment performed at Jefferson Lab Hall A has collected inclusive electron-scattering data for different targets the kinematics corresponding to beam energy 2.222 GeV and scattering angle 15.54 deg. Here we present a comprehensive analysis of compare double-differential cross sections electrons, extracted using solid (aluminum, carbon, titanium) closed argon-gas cell. extend over broad range transfer, where quasielastic interaction, Delta-resonance excitation, inelastic...
The E12-14-012 experiment, performed in Jefferson Lab Hall A, has collected exclusive electron-scattering data (e,e$^\prime$p) parallel kinematics using natural argon and titanium targets. Here, we report the first results of analysis set corresponding to beam energy 2,222 MeV, electron scattering angle 21.5 deg, proton emission -50 deg. differential cross sections, measured with $\sim$4% uncertainty, have been studied as a function missing momentum, compared Monte Carlo simulations,...
Using the $e^+e^-$ collision data collected with BESIII detector operating at BEPCII collider, center-of-mass energies from threshold to $4.95$~GeV, we present precise measurements of cross sections for process $e^+e^-\to D_s^+D_s^-$ using a single tag method. The resulting section lineshape exhibits several new structures, thereby offering an input coupled channel analysis and model tests, which are critical understand vector charmonium-like states masses between 4 5~GeV.
We search for the M1 radiative transition \psi(3686) \to \gamma\eta_{c}(2S) by reconstructing exclusive \eta_{c}(2S) K_{S}^{0}K^{\pm}\pi^{\mp}\pi^{+}\pi^{-} decay using 1.06 \times 10^8 events collected with BESIII detector. The signal is observed a statistical significance of greater than 4 standard deviations. measured mass 3646.9 \pm 1.6(stat) 3.6(syst) MeV/c^2, and width 9.9 4.8(stat) 2.9(syst) MeV/c^2. product branching fraction to be B(\psi(3686) \gamma\eta_{c}(2S)) B(\eta_{c}(2S)...
Using a data sample of $1.31 \times 10^{9}$ $J/\psi$ events accumulated with the BESIII detector, decay $J/\psi\to p\bar{p}\phi$ is studied via two modes, $\phi\to K^{0}_{S}K^{0}_{L}$ and K^{+}K^{-}$. The branching fraction measured to be $\mathcal{B}(J/\psi\to p\bar{p}\phi)=[5.23\pm0.06(\mbox{stat})\pm0.33(\mbox{syst})]\times10^{-5}$, which agrees well previously published measurement, but significantly improved precision. No evident enhancement near $p\bar{p}$ mass threshold, denoted as...
Using a sample of $58\times 10^6$ $J/\psi$ events collected with the BESII detector, radiative decays $J/\psi\to\gamma\gamma V$, where $V=\rho$ or $\phi$, are studied. A resonance around 1420 MeV/c$^2$ (X(1424)) is observed in $\gamma\rho$ mass spectrum. Its and width measured to be $1424\pm 10(stat)\pm 11(sys)$ $ 101.0\pm 8.8 \pm 8.8$ MeV/c$^2$, respectively, its branching ratio $B(J/\psi\to \gamma X(1424)\to \rho)$ determined $(1.07\pm0.17 0.11)\times 10^{-4}$. search for $X(1424)\to...