Y. B. Chen
A5068030380- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Advanced Multi-Objective Optimization Algorithms
- High-Energy Particle Collisions Research
- Computational Physics and Python Applications
- Spectroscopy and Chemometric Analyses
- Optimal Experimental Design Methods
KU Leuven
2024
Institute of High Energy Physics
2005-2022
An enhancement near threshold is observed in the omega(phi) invariant mass spectrum from doubly Okubo-Zweig-Iizuka-suppressed decays of J/psi-->gamma(omega)phi, based on a sample 5.8 x 10(7) J/psi events collected with BESII detector. A partial wave analysis shows that this favors JP=0+, and its width are M=1812(+19)(-26)(stat)+/-18(syst) MeV/c2 Gamma=105+/-20(stat)+/-28(syst) MeV/c2. The product branching fraction determined to be...
Staggered-level designs have been introduced in the literature as cost-efficient and statistically efficient alternatives to split-plot split-split-plot for experiments with multiple hard-to-change factors. In this article, we present an application of a staggered-level design staple fiber cutting process at Eastman. The experiment was run blocks involved one quantitative factor, two-level categorical three easy-to-change We review existing work on designs, discuss D-, A- I-optimal blocked...
Received 27 December 2004DOI:https://doi.org/10.1103/PhysRevD.71.019901©2005 American Physical Society
Based on $5.8 \times 10^7 J\psi$ events collected with BESII at the Beijing Electron-Positron Collider (BEPC), decay branching fractions of $J\psi\to\omega\pi^0$, $\omega\eta$, and $\omega\eta'$ are measured using different $\eta$ $\eta'$ modes. The results higher than previous measurements. $\omega\pi^0$ electromagnetic form factor is also obtained.
A bstract Using e + − annihilation data corresponding to a total integrated luminosity of 6 . 32 fb 1 collected at the center-of-mass energies between 4.178 and 4.226 GeV with BESIII detector, we perform an amplitude analysis decay $$ {D}_s^{+} <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:math> → K π determine relative fractions phases different intermediate processes. Absolute branching...