A5001466471- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- semigroups and automata theory
- Cosmology and Gravitation Theories
- Heavy Metals in Plants
- Tea Polyphenols and Effects
- Algorithms and Data Compression
- Dark Matter and Cosmic Phenomena
- Metal Forming Simulation Techniques
- Tunneling and Rock Mechanics
- Urban Heat Island Mitigation
- Black Holes and Theoretical Physics
- Advanced Combinatorial Mathematics
- Medical Imaging Techniques and Applications
- Food Quality and Safety Studies
- Engineering Structural Analysis Methods
Institute of High Energy Physics
2019-2023
University of Chinese Academy of Sciences
2019-2021
Abstract We constrain two vacuum decay models ( $$\varLambda (t)$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>Λ</mml:mi> <mml:mo>(</mml:mo> <mml:mi>t</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> CDM) utilizing the baryon acoustic oscillations (BAO) data released by Dark Energy Spectroscopic Instrument (DESI), distance prior from cosmic microwave background (CMB) observed Planck satellite, Hubble rate obtained via chronometers (CC) method and type Ia...
Using $e^+e^-\to\Lambda_c^+\bar\Lambda_c^-$ production from a 567 pb$^{-1}$ data sample collected by BESIII at 4.6 GeV, full angular analysis is carried out simultaneously on the four decay modes of $\Lambda_c^+\to pK_S^0$, $\Lambda \pi^+$, $\Sigma^+\pi^0$, and $\Sigma^0\pi^+$. For first time, $\Lambda_c^+$ transverse polarization studied in unpolarized $e^+e^-$ collisions, where non-zero effect observed with statistical significance 2.1$\sigma$. The asymmetry parameters weak hadronic decays...
Using data samples with a total integrated luminosity of $20.1\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected by the BESIII detector operating at BEPCII collider, cross section process ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}\ensuremath{\psi}(3686)$ is measured center-of-mass energies between 4.0076 and 4.6984 GeV. The consistent previous results, much improved precision. A fit to energy-dependent section, which...
Using 448.1 $\times$ $10^{6}$ $ψ(3686)$ events collected with the BESIII detector at BEPCII, we employ a single-baryon tagging technique to make first observation of $ψ(3686)\rightarrowΞ(1530)^{-}\barΞ(1530)^{+}$ and $Ξ(1530)^{-}\barΞ^{+}$ decays statistical significance more than 10$σ$ 5.0$σ$, respectively. The branching fractions are measured be $\cal{B}$$[ψ(3686)\rightarrowΞ(1530)^{-}\barΞ(1530)^{+}] $ = (11.45 $\pm$ 0.40 0.59) $10^{-5}$ $\cal{B}$$[ψ(3686)\rightarrowΞ(1530)^{-}\barΞ^{+}]$...
By analyzing a data sample corresponding to an integrated luminosity of 2.93 fb^{-1} collected at center-of-mass energy 3.773 GeV with the BESIII detector, we measure for first time absolute branching fraction D^{+}→ημ^{+}ν_{μ} decay be B_{D^{+}→ημ^{+}ν_{μ}}=(10.4±1.0_{stat}±0.5_{syst})×10^{-4}. Using world averaged value B_{D^{+}→ηe^{+}ν_{e}}, ratio two fractions is determined B_{D^{+}→ημ^{+}ν_{μ}}/B_{D^{+}→ηe^{+}ν_{e}}=0.91±0.13_{(stat+syst)}, which agrees theoretical expectation lepton...
By analyzing $6.32\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of ${e}^{+}{e}^{\ensuremath{-}}$ annihilation data collected at the center-of-mass energies between 4.178 and 4.226 GeV with BESIII detector, we determine branching fraction leptonic decay ${D}_{s}^{+}\ensuremath{\rightarrow}{\ensuremath{\tau}}^{+}{\ensuremath{\nu}}_{\ensuremath{\tau}}$,...
Using $2.93 \rm fb^{-1}$ of $e^+e^-$ collision data collected at a center-of-mass energy 3.773 GeV with the BESIII detector, first observation doubly Cabibbo-suppressed decay $D^+\to K^+\pi^+\pi^-\pi^0$ is reported. After removing decays that contain narrow intermediate resonances, including K^+\eta$, K^+\omega$, and K^+\phi$, branching fraction measured to be $(1.13 \pm 0.08_{\rm stat} 0.03_{\rm syst})\times 10^{-3}$. The ratio fractions over K^-\pi^+\pi^+\pi^0$ found $(1.81\pm0.15)$\%,...
Using a data sample of 1.31×109 J/ψ events collected with the BESIII detector, search for η′→γγη via J/ψ→γη′ is performed first time. No significant η′ signal observed in γγη invariant mass spectrum, and branching fraction determined to be less than 1.33×10−4 at 90% confidence level.Received 26 June 2019Corrected 3 May 2022DOI:https://doi.org/10.1103/PhysRevD.100.052015Published by American Physical Society under terms Creative Commons Attribution 4.0 International license. Further...
Using $(1310.6\ifmmode\pm\else\textpm\fi{}7.0)\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $J/\ensuremath{\psi}$ events acquired with the BESIII detector at BEPCII storage rings, decay ${\ensuremath{\eta}}^{\ensuremath{'}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ is observed for first time a significance of $8\ensuremath{\sigma}$ via process...
A bstract Using 10 . 1 × 9 J/ψ events produced by the Beijing Electron Positron Collider (BEPCII) at a center-of-mass energy $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 3 097 GeV and collected with BESIII detector, we present search for rare semi-leptonic decay → D − e + ν c.c. No excess of signal above background is observed, an upper limit on branching fraction ℬ( J / ψ c .) < 7.1 −8 obtained 90%...
Using 2.93 fb−1 of e+e− collision data taken with the BESIII detector at a center-of-mass energy 3.773 GeV, observation D0→K1(1270)−e+νe semileptonic decay is presented. The statistical significance greater than 10σ. branching fraction measured to be (1.09±0.13+0.09−0.16±0.12)×10−3. Here, first uncertainty statistical, second systematic, and third originates from assumed K1(1270)−→K−π+π−. longitudinal polarization in determined for time 0.50±0.19stat±0.08syst.Received 22 February 2021Revised...
A bstract By using 6.32 fb − 1 of data collected with the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, we perform an amplitude analysis decay $$ {D}_s^{+}\to {K}_S^0{\pi}^{+}{\pi}^0 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mi>s</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> <mml:mo>→</mml:mo> <mml:mi>K</mml:mi> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> <mml:msup> <mml:mi>π</mml:mi> </mml:msup> </mml:math> determine...
We measured the branching fractions of decays ${\ensuremath{\chi}}_{cJ}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Sigma}}}^{\ensuremath{-}}{\overline{\mathrm{\ensuremath{\Sigma}}}}^{+}$ for first time using final states $n\overline{n}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$. The data sample exploited here is $448.1\ifmmode\times\else\texttimes\fi{}{10}^{6}\text{ }\text{ }\ensuremath{\psi}(3686)$ events collected with BESIII. find...
The rare decay η′→π+π−e+e− is studied using a sample of 1.3×109 J/ψ events collected with the BESIII detector at BEPCII in 2009 and 2012. branching fraction measured improved precision to be (2.42±0.05stat±0.08syst)×10−3. Due inclusion new data, this result supersedes last on fraction. In addition, CP-violating asymmetry angle between planes π+π−-pair e+e−-pair investigated. A measurable value would indicate physics beyond standard model; ACP=(2.9±3.7stat±1.1syst)%, which consistent model...
We report a measurement of the observed cross sections ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}J/\ensuremath{\psi}X$ based on $3.21\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data accumulated at energies from 3.645 to 3.891 GeV with BESIII detector operated BEPCII collider. In analysis sections, we measured decay branching fractions...
This study utilizes a regional numerical weather model incorporating multilayer urban canopy parameterization alongside building energy (BEP + BEM) to examine the sensitivity of various parameters, including those defining materials and environments, during real-case heatwave event in Chicago Metropolitan Area (CMA) August 2023. The application local climate zones further refines this analysis. Findings indicate that wall conductivity ground albedo play significant roles affecting...
Using high-resolution x-ray tomography, we experimentally investigate the bridge structures in tapped granular packings composed of particles with varying friction coefficients. We find that gravity can induce subtle structural changes on load-bearing contacts, allowing us to identify correct contacts based information alone. these identified cooperative which are mechanical backbones system. characterize geometric properties bridges and their cooperativity increases as packing fraction...
Ten hadronic final states of the ${h}_{c}$ decays are investigated via process $\ensuremath{\psi}(3686)\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{h}_{c}$, using a data sample $(448.1\ifmmode\pm\else\textpm\fi{}2.9)\ifmmode\times\else\texttimes\fi{}{10}^{6}\text{ }\text{ }\ensuremath{\psi}(3686)$ events collected with BESIII detector. The decay channel...
A gluing of two rooted trees is an identification their leaves and un-subdivision the resulting 2-valent vertices. subdivergence free if it has no 2-edge cuts with both roots on same side cut. The problem language motivated by quantum field theory. We enumerate subdivergence-free gluings for certain families trees, showing a connection connected permutations, we give algorithms to compute gluings.
Using a sample of 106 million $\ensuremath{\psi}(3686)$ decays, $\ensuremath{\psi}(3686)\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\chi}}_{cJ}(J=0,1,2)$ and $\ensuremath{\psi}(3686)\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\chi}}_{cJ},{\ensuremath{\chi}}_{cJ}\ensuremath{\rightarrow}\ensuremath{\gamma}J/\ensuremath{\psi}(J=1,2)$ events are utilized to study inclusive ${\ensuremath{\chi}}_{cJ}\ensuremath{\rightarrow}\text{anything}$,...