L. Q. Huang
A5071909505- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Neutrino Physics Research
- Atomic and Subatomic Physics Research
- Cosmology and Gravitation Theories
- Black Holes and Theoretical Physics
- Particle Accelerators and Free-Electron Lasers
- Medical Imaging Techniques and Applications
- Stellar, planetary, and galactic studies
- Particle Detector Development and Performance
- Advanced NMR Techniques and Applications
- Pulsars and Gravitational Waves Research
- Nuclear physics research studies
- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Additive Manufacturing and 3D Printing Technologies
- Manufacturing Process and Optimization
- Relativity and Gravitational Theory
- Crystallography and Radiation Phenomena
- Adversarial Robustness in Machine Learning
- Advanced optical system design
- Metabolomics and Mass Spectrometry Studies
Institute of Modern Physics
2022-2025
University of Chinese Academy of Sciences
2022-2025
Institute of Theoretical Physics
2024-2025
Lanzhou University
2024-2025
Chinese Academy of Sciences
2013-2024
Institute of High Energy Physics
2003-2024
Meiji University
2024
University of South China
2020-2023
University of Groningen
2023
Shanghai Jiao Tong University
2021
We study the process ee+ e- → π+ π- J/ψ at a center-of-mass energy of 4.260 GeV using 525 pb(-1) data sample collected with BESIII detector operating Beijing Electron Positron Collider. The Born cross section is measured to be (62.9±1.9±3.7) pb, consistent production Y(4260). observe structure around 3.9 GeV/c2 in π(±)J/ψ mass spectrum, which we refer as Z(c)(3900). If interpreted new particle, it unusual that carries an electric charge and couples charmonium. A fit invariant neglecting...
We study e+e-→π+π-hc at center-of-mass energies from 3.90 to 4.42 GeV by using data samples collected with the BESIII detector operating Beijing Electron Positron Collider. The Born cross sections are measured 13 and found be of same order magnitude as those e+e-→π+π-J/ψ but a different line shape. In π±hc mass spectrum, distinct structure, referred Zc(4020), is observed 4.02 GeV/c2. Zc(4020) carries an electric charge couples charmonium. A fit invariant neglecting possible interferences,...
With data samples collected with the BESIII detector operating at BEPCII storage ring center-of-mass energies from 4.009 to 4.420 GeV, process e+e-→ γX(3872) is observed for first time a statistical significance of 6.3σ. The measured mass X(3872) (3871.9 ± 0.7s tat 0.2 syst) MeV/c(2), in agreement previous measurements. Measurements product cross section σ[e+e- → γX(3872)] and branching fraction B[X(3872)→π+π-J/ψ] 4.009, 4.229, 4.260, 4.360 GeV are reported. Our measurements consistent...
We observe a narrow enhancement near 2m(p) in the invariant mass spectrum of pp pairs from radiative J/psi-->gammapp decays. No similar structure is seen J/psi-->pi(0)pp The results are based on an analysis 58 x 10(6) event sample J/psi decays accumulated with BESII detector at Beijing electron-positron collider. can be fit either S- or P-wave Breit-Wigner resonance function. In case S-wave fit, peak below M=1859(+3)(-10) (stat)+5-25(syst) MeV/c(2) and total width Gamma<30 90% confidence...
Data sets were collected with the BESIII detector at BEPCII collider center-of-mass energy of √s = 3.650 GeV during May 2009 and 3.773 from January 2010 to 2011. By analyzing large angle Bhabha scattering events, integrated luminosities two data are measured be (44.49±0.02±0.44) pb−1 (2916.94±0.18±29.17) pb−1, respectively, where first error is statistical second systematic.
Results are presented on ψ(2S) and J/ψ hadronic decays to K0SpK−n̄ K0S¯pK+n final states from data samples of 14 million 58 events accumulated at the BES II detector. No Θ(1540) signal, pentaquark candidate, is observed, upper limits set for B(ψ(2S)→Θ¯Θ→K0SpK−n̄+K0S¯pK+n)<0.84×10−5 B(J/→ψΘ¯Θ→K0SpK−n̄+K0S¯pK+n)<1.1×10−5 90% confidence level. For single production, determined by our analysis also order 10−5 in both decays. Received 4 February...
We report a measurement of the branching fraction B(D+→μ+νμ)=[3.71±0.19(stat)±0.06(sys)]×10−4 based on 2.92 fb−1 data accumulated at √s=3.773 GeV with BESIII detector BEPCII collider. This measurement, in conjunction Cabibbo-Kobayashi-Maskawa matrix element |Vcd| determined from global Standard Model fit, implies value for weak decay constant fD+=(203.2±5.3±1.8) MeV. Additionally, using this together lattice QCD prediction fD+, we find |Vcd|=0.2210±0.0058±0.0047. In either case, these are...
We investigate spherically symmetric axion stars with minimal coupling between a complex scalar field and gravity in tidal environment. Tidal perturbations are treated as linear, we calculate the Love numbers for stars. The results show that electric of positive, while magnetic negative on stable branch. much larger than ones Newtonian branch, but only slightly relativistic branch has smaller indicating weaker deformability This is due to fact more compact thus hardly distorted by forces.
Based on a sample of $2.25\times 10^{8}$ $J/\psi$ events collected with the BESIII detector at BEPCII, full partial wave analysis $J/\psi\to\gamma\eta\eta$ was performed using relativistic covariant tensor amplitude method. The results show that dominant $0^{++}$ and $2^{++}$ components are from $f_0(1710)$, $f_0(2100)$, $f_0(1500)$, $f_2'(1525)$, $f_2(1810)$ $f_2(2340)$. resonance parameters branching fractions also presented.
Abstract In this paper, we investigate the properties of first excited state Dirac stars (DSs) with higher azimuthal harmonic index (specifically, indexes m D = 3/2, 5/2, 7/2), as well relationship between ADM mass and angular momentum respect to frequency. Moreover, find that ergospheres DSs appear at lower spinor field frequencies, both distribution functions are asymmetric about equatorial plane. Furthermore, introduce ground scalar examine its impact on system, which is known multi-state...
This lesson shows how to create interactive web-based dashboards using Python's Dash library. Using two news media case studies, this provides a practical guide for making digital humanities research outputs more accessible and engaging.
Abstract In this paper, we study solutions of a static spherically symmetric system, which is composed the coupling with Bardeen action and two Dirac fields. For case where only present, magnetic charge q can be infinite, then when greater than certain value $$q_b$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>q</mml:mi> <mml:mi>b</mml:mi> </mml:msub> </mml:math> , there exists black hole solution, called (BBH). However, if field introduced, find that smaller...
Abstract We investigate a Bardeen model coupling Einstein gravity with nonlinear electromagnetic fields and non-topological soliton complex scalar fields, governed by the magnetic charge $$\tilde{q}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mover> <mml:mi>q</mml:mi> <mml:mo>~</mml:mo> </mml:mover> </mml:math> , field frequency $$\tilde{\omega }$$ <mml:mi>ω</mml:mi> self-interaction parameter $$\tilde{\eta <mml:mi>η</mml:mi> . Our results reveal that exhibits -dependent...
The decay $J/\psi \rightarrow \omega p \bar{p}$ has been studied, using $225.3\times 10^{6}$ $J/\psi$ events accumulated at BESIII. No significant enhancement near the $p\bar{p}$ invariant-mass threshold (denoted as $X(p\bar{p})$) is observed. upper limit of branching fraction $\mathcal{B}(J/\psi X(p\bar{p}) \bar{p})$ determined to be $3.9\times10^{-6}$ 95% confidence level. measured \bar{p}) =(9.0 \pm 0.2\ (\text{stat.})\pm 0.9\ (\text{syst.})) \times 10^{-4}$.
Using a sample of $1.3\ifmmode\times\else\texttimes\fi{}{10}^{9}\text{ }\text{ }J/\ensuremath{\psi}$ events collected with the BESIII detector, we report first observation ${\ensuremath{\eta}}^{\ensuremath{'}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and...
Decays of the ψ(2S) into vector plus tensor meson final states have been studied with 14 million events collected BESII detector. The branching fractions ψ(2S)→ωf2(1270), ρa2(1320), K*(892)0K2*(1430)0+c.c., and φf2′(1525) are determined. They improve upon previous BESI results confirm violation "12%" rule for decays to VT channels higher precision.Received 4 December 2003DOI:https://doi.org/10.1103/PhysRevD.69.072001©2004 American Physical Society
Results are presented on $J/\ensuremath{\psi}$ radiative decays to ${K}^{+}{K}^{\ensuremath{-}}$ and ${K}_{S}^{0}{K}_{S}^{0}$ based a sample of 58M events taken with the BES II detector. A partial wave analysis is carried out using relativistic covariant tensor amplitude method in 1--2 GeV mass range. There conspicuous production due ${f}_{2}^{\ensuremath{'}}(1525)$ ${f}_{0}(1710).$ The latter peaks at $1740\ifmmode\pm\else\textpm\fi{}{4}_{\ensuremath{-}25}^{+10}\mathrm{MeV}$ width...
The absolute branching fraction for the decay $D^+ \to \bar K^0 e^+\nu_e$ is determined using $5321\pm 149 \pm 160$ singly tagged $D^-$ sample from data collected around 3.773 GeV with BES-II detector at BEPC collider. In system recoiling against meson, $34.4\pm 6.1$ events e ^+\nu_e$ observed. Those yield to be $BF(D^+ e^+\nu_e)=(8.95 1.59\pm 0.67)%$. ratio of two partial widths decays $D^0 K^-e^+\nu_e$ and $ \Gamma (D^0 K^-e^+\nu_e)/ (D^+ e^+\nu_e) = 1.08\pm 0.22 0.07$.
Using a sample of 1.06×108 ψ(2S) events collected with the BESIII detector at BEPCII, decay ψ(2S)→pp¯η is studied. A partial wave analysis determines that intermediate state N(1535) mass 1524±5−4+10 MeV/c2 and width 130−24−10+27+57 dominant in decay; product branching fraction determined to be B(ψ(2S)→N(1535)p¯)×B(N(1535)→pη)+c.c.=(5.2±0.3−1.2+3.2)×10−5. Furthermore, measured (6.4±0.2±0.6)×10−5. Here, first error statistical second systematic.Received 9 April...
The process ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}p\overline{p}{\ensuremath{\pi}}^{0}$ has been studied by analyzing data collected at $\sqrt{s}=3.773\text{ }\text{ }\mathrm{GeV}$, $\sqrt{s}=3.650\text{ and during a $\ensuremath{\psi}(3770)$ line shape scan with the BESIII detector BEPCII collider. Born cross section of $p\overline{p}{\ensuremath{\pi}}^{0}$ in vicinity is measured, $\ensuremath{\psi}(3770)\ensuremath{\rightarrow}p\overline{p}{\ensuremath{\pi}}^{0}$ extracted...
The decay ψ′→π+π−π0 is analyzed using a sample of 14 million ψ′ events taken with the BESII detector at BEPC, and branching fraction measured to be B(ψ′→π+π−π0)=(18.1±1.8±1.9)×10−5. A partial wave analysis carried out helicity amplitude method. ψ′→ρ(770)π observed, B(ψ′→ρ(770)π)=(5.1±0.7±1.1)×10−5, where first error statistical second one systematic. high mass enhancement around 2.15 GeV/c2 also observed. Attributing this ρ(2150) resonance, B(ψ′→ρ(2150)π→π+π−π0)=(19.4±2.5−3.4+11.5)×10−5....