D. Y. Chen
A5079948739- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Medical Imaging Techniques and Applications
Central China Normal University
2020-2022
Using a total of 11.0 fb^{-1} e^{+}e^{-} collision data with center-of-mass energies between 4.009 and 4.6 GeV collected the BESIII detector at BEPCII, we measure fifteen exclusive cross sections effective form factors for process e^{+}e^{-}→Ξ^{-}Ξ[over ¯]^{+} by means single baryon-tag method. After performing fit to dressed section ¯]^{+}, no significant ψ(4230) or ψ(4260) resonance is observed in Ξ^{-}Ξ[over final states, upper limits 90% confidence level on Γ_{ee}B processes...
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...
Using 6.32 fb−1 of electron-positron collision data recorded by the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, we present first search for decay D+s→a0(980)0e+νe, a0(980)0→π0η, which could proceed via a0(980)−f0(980) mixing. No significant signal is observed. An upper limit 1.2×10−4 90% confidence level set on product branching fractions D+s→a0(980)0e+νe a0(980)0→π0η decays.Received 22 March 2021Accepted 30...
Using 6.32 fb−1 of e+e− collision data collected by the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, an amplitude analysis Ds+→KS0K−π+π+ decays is performed for first time to determine intermediate-resonant contributions. The dominant component Ds+→K*(892)+K¯*(892)0 decay with a fraction (40.6±2.9stat±4.9sys)%. Our results are used obtain more precise measurement branching decay, which determined be (1.46±0.05stat±0.05sys)%.Received 9 February 2021Accepted April...
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...
We search for the process $e^{+}e^{-}\rightarrow \pi ^{+}\pi ^{-} \chi_{cJ}$ ($J=0,1,2$) and a charged charmonium-like state in $\pi ^{\pm} subsystem. The uses data sets collected with BESIII detector at BEPCII storage ring center-of-mass energies between 4.18 GeV 4.60 GeV. No significant signals are observed any energy, thus upper limits provided which also serve as possible structure invariant mass.