Z. Y. Deng
A5008053542- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Black Holes and Theoretical Physics
- Atomic and Subatomic Physics Research
- Computational Physics and Python Applications
- AI in Service Interactions
- Dark Matter and Cosmic Phenomena
- Advanced NMR Techniques and Applications
- Digital Mental Health Interventions
- Artificial Intelligence in Healthcare and Education
- Cosmology and Gravitation Theories
- Scientific Research and Discoveries
- Algorithms and Data Compression
- Experimental and Theoretical Physics Studies
- Medical Imaging Techniques and Applications
Institute of High Energy Physics
2013-2025
Ankara University
2013
Petersburg Nuclear Physics Institute
2013
Nagoya University
2013
Guangxi University
2013
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...
A bstract We report an improved study of the semileptonic decay $$ {D}^0\to {\overline{K}}^0{\pi}^{-}{e}^{+}{\nu}_e <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>D</mml:mi> <mml:mn>0</mml:mn> </mml:msup> <mml:mo>→</mml:mo> <mml:mover> <mml:mi>K</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mi>π</mml:mi> <mml:mo>−</mml:mo> <mml:mi>e</mml:mi> <mml:mo>+</mml:mo> <mml:msub> <mml:mi>ν</mml:mi> </mml:msub> </mml:math> based on a sample 7.9 fb − 1 e + annihilation...
The cross section of the process $e^+e^-\to \pi^+D^0D^{*-}$ for center-of-mass energies from 4.05 to 4.60~GeV is measured precisely using data samples collected with BESIII detector operating at BEPCII storage ring. Two enhancements are clearly visible in around 4.23 and 4.40~GeV. Using several models describe dressed yields stable parameters first enhancement, which has a mass $4228.6 \pm 4.1 6.3 \un{MeV}/c^2$ width $77.0 6.8 \un{MeV}$, where uncertainties statistical second ones...
Using $e^+e^-$ annihilation data corresponding to a total integrated luminosity of 6.32 $\rm fb^{-1}$ collected at center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we perform an amplitude analysis decay $D_{s}^{+} \to K_{S}^{0}K_{S}^{0}\pi^{+}$ for first time. An enhancement is observed in $K_{S}^{0}K_{S}^{0}$ mass spectrum near 1.7 GeV/$c^2$, which was not seen K^+K^-\pi^{+}$ earlier work, implying existence isospin one partner $f_0(1710)$. The branching...
We present measurements of the Born cross sections for processes e^{+}e^{-}→ωχ_{c1} and ωχ_{c2} at center-of-mass energies sqrt[s] from 4.308 to 4.951 GeV. The are performed with data samples corresponding an integrated luminosity 11.0 fb^{-1} collected BESIII detector operating Beijing Electron Positron Collider storage ring. Assuming e^{+}e^{-}→ωχ_{c2} signals come a single resonance, mass width determined be M=(4413.6±9.0±0.8) MeV/c^{2} Γ=(110.5±15.0±2.9) MeV, respectively, which is...
Based on an e^{+}e^{-} collision data sample corresponding to integrated luminosity of 567 pb^{-1} taken at the center-of-mass energy sqrt[s]=4.6 GeV with BESIII detector, we measure absolute branching fraction inclusive decay Λ_{c}^{+}→Λ+X be B(Λ_{c}^{+}→Λ+X)=(38.2_{-2.2}^{+2.8}±0.9)% using double-tag method, where X refers any possible final state particles. In addition, search for direct CP violation in charge asymmetry this first time, and obtain A_{CP}≡[B(Λ_{c}^{+}→Λ+X)-B(Λ[over...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo stretchy="false">(</a:mo><a:mrow><a:mn>2712</a:mn><a:mo>±</a:mo><a:mn>14</a:mn></a:mrow><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>2</e:mn><e:mi>S</e:mi><e:mo...
The inclusive cross sections of prompt <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mi>J</a:mi><a:mo>/</a:mo><a:mi>ψ</a:mi></a:mrow></a:math> and <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mi>ψ</c:mi><c:mo stretchy="false">(</c:mo><c:mn>3686</c:mn><c:mo stretchy="false">)</c:mo></c:math> production are measured at center-of-mass energies from 3.808 to 4.951 GeV. dataset used is <g:math...
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"...
A bstract Using e + − collision data at 13 center-of-mass energies ranging from 4.600 to 4.951 GeV collected with the BESIII detector, we conduct first search for → $$ {K}_S^0{K}_S^0{h}_c <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>K</mml:mi> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> <mml:msub> <mml:mi>h</mml:mi> <mml:mi>c</mml:mi> </mml:msub> </mml:math> process and investigate resonance structures in cross section line shape. No significant...
Based on a sample of 225.3 million J/ψ events accumulated with the BESIII detector at BEPCII, decays η′→π+π−l+l− are studied via J/ψ→γη′. A clear η′ signal is observed in π+π−e+e− mass spectrum, and branching fraction measured to be B(η′→π+π−e+e−)=(2.11±0.12(stat)±0.14(syst))×10−3, which good agreement theoretical predictions previous measurement, but determined much higher precision. No found π+π−μ+μ− upper limit B(η′→π+π−μ+μ−)<2.9×10−5 90% confidence level.Received 29 March...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mn>2.93</a:mn><a:mtext> </a:mtext><a:mtext> </a:mtext><a:msup><a:mi>fb</a:mi><a:mrow><a:mo>−</a:mo><a:mn>1</a:mn></a:mrow></a:msup></a:math> of <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:msup><c:mi>e</c:mi><c:mo>+</c:mo></c:msup><c:msup><c:mi>e</c:mi><c:mo>−</c:mo></c:msup></c:math> collision data collected with the BESIII detector at center-of-mass energy 3.773 GeV, we investigate...
Based on <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mo stretchy="false">(</a:mo><a:mn>10.09</a:mn><a:mo>±</a:mo><a:mn>0.04</a:mn><a:mo stretchy="false">)</a:mo><a:mo>×</a:mo><a:msup><a:mn>10</a:mn><a:mn>9</a:mn></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:math> events collected with the BESIII detector operating at BEPCII collider, a partial wave analysis of decay <e:math...
A bstract Using (27 . 12 ± 0 14) × 10 8 ψ (3686) events collected by the BESIII detector at center-of-mass energy of $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 3 686 GeV, we search for first time two nonleptonic hyperon decays that change strangeness units, Ω − → Σ π and nK No significant signal is observed. The upper limits on their decay branching fractions are determined to be \mathcal{B}...
The absolute branching fraction of the decay <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msub><a:mi mathvariant="normal">Λ</a:mi><a:mi>c</a:mi></a:msub><a:mo stretchy="false">(</a:mo><a:mn>2625</a:mn><a:msup><a:mo stretchy="false">)</a:mo><a:mo>+</a:mo></a:msup></a:mrow><a:mo stretchy="false">→</a:mo><a:msubsup><a:mi...
With the data samples taken at center-of-mass energies from 2.00 to 3.08 GeV with BESIII detector BEPCII collider, a partial wave analysis on <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msup><a:mi>e</a:mi><a:mo>+</a:mo></a:msup><a:msup><a:mi>e</a:mi><a:mo>−</a:mo></a:msup><a:mo stretchy="false">→</a:mo><a:mrow><a:msup><a:mi>π</a:mi><a:mo>+</a:mo></a:msup><a:msup><a:mi>π</a:mi><a:mo>−</a:mo></a:msup><a:msup><a:mi>π</a:mi><a:mn>0</a:mn></a:msup></a:mrow></a:math>...
Using a sample of about 10 billion <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>J</a:mi><a:mo>/</a:mo><a:mi>ψ</a:mi></a:math> events with the BESIII detector, we search for weak decays <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mrow><c:mi>J</c:mi><c:mo>/</c:mo><c:mi>ψ</c:mi><c:mo stretchy="false">→</c:mo><c:msup><c:mrow><c:mover accent="true"><c:mrow><c:mi>D</c:mi></c:mrow><c:mrow><c:mo...
Analyzing <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msup><a:mi>e</a:mi><a:mo>+</a:mo></a:msup><a:msup><a:mi>e</a:mi><a:mo>−</a:mo></a:msup></a:math> collision data corresponding to an integrated luminosity of <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mn>7.33</c:mn><c:mtext> </c:mtext><c:mtext> </c:mtext><c:msup><c:mi>fb</c:mi><c:mrow><c:mo>−</c:mo><c:mn>1</c:mn></c:mrow></c:msup></c:math> collected at center-of-mass energies...
We measure the absolute branching fractions of semileptonic <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msubsup><a:mi>D</a:mi><a:mi>s</a:mi><a:mo>+</a:mo></a:msubsup></a:math> decays via <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mrow><c:msup><c:mrow><c:mi>e</c:mi></c:mrow><c:mrow><c:mo>+</c:mo></c:mrow></c:msup><c:msup><c:mrow><c:mi>e</c:mi></c:mrow><c:mrow><c:mo>−</c:mo></c:mrow></c:msup><c:mo...
Using a data sample of $2.25\times10^{8}$ $J/ψ$ events collected with the BESIII detector, we present first observation decays $η_{c}$ mesons to $Σ^{+}\barΣ^{-}$ and $Ξ^{-}\barΞ^{+}$. The branching fractions are measured be $(2.11\pm0.28_{\rm stat.}\pm0.18_{\rm syst.}\pm0.50_{\rm PDG})\times10^{-3}$ $(0.89\pm0.16_{\rm stat.}\pm0.08_{\rm syst.}\pm0.21_{\rm for $η_{c} \to Σ^{+}\barΣ^{-}$ $Ξ^{-}\barΞ^{+}$, respectively. These provide important information on helicity selection rule in...
Using $(10087\pm44)\times10^{6}$ $J/ψ$ events collected with the BESIII detector at BEPCII $e^+e^-$ storage ring center-of-mass energy of $\sqrt{s}=3.097~\rm{GeV}$, we present a search for rare semi-muonic charmonium decay $J/ψ\to D^{-}μ^{+}ν_μ+c.c.$. Since no significant signal is observed, set an upper limit branching fraction to be $\mathcal{B}(J/ψ\to D^{-}μ^{+}ν_μ+c.c.)<5.6\times10^{-7}$ $90\%$ confidence level. This first weak muon in final state.
The $J/\psi, \psi(3686) \to \Sigma^0 \bar{\Sigma}^{0}$ processes and subsequent decays are studied using the world's largest $J/\psi$ $\psi(3686)$ data samples collected with BESIII detector. strong-$CP$ symmetry is tested in of $\Sigma^0$ hyperons for first time by measuring decay parameters, $\alpha_{\Sigma^0} = -0.0017 \pm 0.0021 0.0018$ $\bar{\alpha}_{\Sigma^0} 0.0020 0.0022$. weak-$CP$ test performed their daughter particles $\Lambda$ $\bar{\Lambda}$. Also time, transverse polarizations...
Based on $2.7 \times 10^9~\psi(3686)$ decays collected with the BESIII detector, radiative decay $\psi(3686)\to\gamma2(\pi^{+}\pi^{-})\eta$ is investigated to measure properties of S- and P-wave charmonium states. The branching fraction $\eta_{c}(1S) \to 2(\pi^{+}\pi^{-})\eta$, which found have a strong dependence interference pattern between $\eta_c(1S)$ non-$\eta_c(1S)$ processes, measured in both destructive constructive scenarios for first time. mass width $\eta_{c}(1S)$ are be...
Based on <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mo stretchy="false">(</a:mo><a:mn>2712.4</a:mn><a:mo>±</a:mo><a:mn>14.3</a:mn><a:mo stretchy="false">)</a:mo><a:mo>×</a:mo><a:msup><a:mn>10</a:mn><a:mn>6</a:mn></a:msup><a:mtext> </a:mtext><a:mtext> </a:mtext><a:mi>ψ</a:mi><a:mo stretchy="false">(</a:mo><a:mn>3686</a:mn><a:mo stretchy="false">)</a:mo></a:math> events, we investigate four hadronic decay modes of the <g:math...