J. H. Feng
A5070914126- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Atomic and Subatomic Physics Research
- Black Holes and Theoretical Physics
- Optical measurement and interference techniques
- Particle Detector Development and Performance
- Laser and Thermal Forming Techniques
- Nuclear physics research studies
- Advanced Measurement and Metrology Techniques
- Neutrino Physics Research
Sun Yat-sen University
2023-2025
We perform the first amplitude analysis of D_{s}^{+}→π^{+}π^{+}π^{-}π^{0} decays based on data samples electron-positron collisions recorded with BESIII detector at center-of-mass energies between 4.128 and 4.226 GeV, corresponding to an integrated luminosity 7.33 fb^{-1}. report observation D_{s}^{+}→f_{0}(980)ρ(770)^{+} a statistical significance greater than 10σ determine branching fractions B(D_{s}^{+}→π^{+}π^{+}π^{-}π^{0}|_{non-η})=(2.04±0.08_{stat}±0.05_{syst})%...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><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:mrow><a:mn>10</a:mn></a:mrow><a:mrow><a:mn>6</a:mn></a:mrow></a:msup><a:mi>ψ</a:mi><a:mo stretchy="false">(</a:mo><a:mn>3686</a:mn><a:mo stretchy="false">)</a:mo></a:mrow></a:math> events collected by the BESIII detector operating at BEPCII collider, we present first...
Using a sample of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mo stretchy="false">(</a:mo><a:mn>2712</a:mn><a:mo>±</a:mo><a:mn>14</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 collected with the BESIII detector, we perform partial wave analyses decays <g:math...
Using <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 collected with the BESIII detector at BEPCII collider 32 center-of-mass energies from 3.50 to 4.95 GeV, corresponding an integrated luminosity of <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mrow><c:mn>25</c:mn><c:mtext> </c:mtext><c:mtext>...
Using data samples of ${e}^{+}{e}^{\ensuremath{-}}$ collisions collected with the BESIII detector at eight center-of-mass energy points between 3.49 and 3.67 GeV, corresponding to an integrated luminosity $670\text{ }\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$, we present upper limits Born cross sections effective form factor for process ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Omega}}}^{\ensuremath{-}}{\overline{\mathrm{\ensuremath{\Omega}}}}^{+}$. A fit using...
We report on a comparison of two possible Λ+c spin hypotheses, J=12 and 32, via the process e+e−→Λ+c¯Λ−c, using angular distributions decays into pK0S, Λπ+, Σ0π+, Σ+π0. The data were recorded at √s=4.6 GeV with BESIII detector correspond to an integrated luminosity 587 pb−1. is determined be J=12, this value favored over 32 hypothesis significance corresponding more than 6 Gaussian standard deviations.Received 31 October 2020Revised 16 February 2021Accepted 12 April...
Using $4.5\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of ${e}^{+}{e}^{\ensuremath{-}}$ annihilation data samples collected at center-of-mass energies ranging from 4.600 to 4.698 GeV with the BESIII detector BEPCII collider, we measured absolute branching fraction for inclusive semileptonic decay ${\mathrm{\ensuremath{\Lambda}}}_{c}^{+}\ensuremath{\rightarrow}X{e}^{+}{\ensuremath{\nu}}_{e}$, where $X$ refers any possible particle system. The is determined be...
Using data samples with an integrated luminosity of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mn>4.67</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> collected by the BESIII detector operating at BEPCII Collider, we search for process <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"...
A bstract The branching fraction of $$ {D}^{+}\to {K}_S^0{\pi}^0{e}^{+}{\nu}_e <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>D</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:mo>→</mml:mo> <mml:msubsup> <mml:mi>K</mml:mi> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> <mml:mi>π</mml:mi> <mml:mi>e</mml:mi> <mml:msub> <mml:mi>ν</mml:mi> </mml:msub> </mml:math> is measured for the first time using 7.93 fb − 1 e + annihilation data collected at center-of-mass...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><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: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...
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 section for process e^{+}e^{-}→D_{s}^{+}D_{s}^{-} using a single-tag method. The resulting line shape exhibits several new structures, thereby offering an input future coupled-channel analysis and model tests, which are critical understand vector charmonium-like states masses between 4 5 GeV.
We present a study of the semileptonic decay <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msup><a:mi>D</a:mi><a:mn>0</a:mn></a:msup><a:mo stretchy="false">→</a:mo><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:msup><a:mi>e</a:mi><a:mo>+</a:mo></a:msup><a:msub><a:mi>ν</a:mi><a:mi>e</a:mi></a:msub></a:math> using an <d:math xmlns:d="http://www.w3.org/1998/Math/MathML"...
We propose a new semileptonic tag method to study the doubly Cabibbo-suppressed D decay in ψ(3770)→D¯D reaction. Utilizing dataset corresponding an integrated luminosity of 2.93 fb−1 at center-of-mass energy 3.773 GeV collected by BESIII detector, we determine branching fraction for D+→K+π+π−π0 be (1.03±0.12stat±0.06syst)×10−3, which contributions from narrow intermediate resonances, D+→K+η, D+→K+ω, and D+→K+ϕ have been excluded. Combining world average D+→K−π+π+π0,...