J. F. Chang
A5109418424- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Mindfulness and Compassion Interventions
- Complementary and Alternative Medicine Studies
- Black Holes and Theoretical Physics
- Atomic and Subatomic Physics Research
- Healthcare and Venom Research
Peking University
2025
Institute of High Energy Physics
2019-2024
We study the e^{+}e^{-}→γωJ/ψ process using 11.6 fb^{-1} e^{+}e^{-} annihilation data taken at center-of-mass energies from sqrt[s]=4.008 GeV to 4.600 with BESIII detector BEPCII storage ring. The X(3872) resonance is observed for first time in ωJ/ψ system a significance of more than 5σ. relative decay ratio X(3872)→ωJ/ψ and π^{+}π^{-}J/ψ measured be R=1.6_{-0.3}^{+0.4}±0.2, where uncertainty statistical second systematic (the same hereafter). sqrt[s]-dependent cross section...
Deficits in self-compassion heighten the vulnerability of mental disorders and jeopardize well-being, emphasizing necessity fostering during unexpected suffering. In this research, we investigate awe as an antecedent for promptly promoting self-compassion. Across five studies (three preregistered), employing various metrics (self-report scale behaviors) testing both controlled natural settings, found that was positively associated with, or promoted, self-reported (Studies 1, 2, 4, 5)...
Using a 3.19 fb^{-1} data sample collected at an e^{+}e^{-} center-of-mass energy of E_{cm}=4.178 GeV with the BESIII detector, we measure branching fraction leptonic decay D_{s}^{+}→μ^{+}ν_{μ} to be B_{D_{s}^{+}→μ^{+}ν_{μ}}=(5.49±0.16_{stat}±0.15_{syst})×10^{-3}. Combining our masses D_{s}^{+} and μ^{+} lifetime D_{s}^{+}, determine f_{D_{s}^{+}}|V_{cs}|=246.2±3.6_{stat}±3.5_{syst} MeV. c→s quark mixing matrix element |V_{cs}| determined from global standard model fit, evaluate constant...
A bstract Using e + − collision data collected with the BESIII detector at BEPCII collider center-of-mass energies between 3.510 and 4.914 GeV, corresponding to an integrated luminosity of 25 fb 1 , we measure Born cross sections for process $$ {e}^{+}{e}^{-}\to {K}^{-}{\overline{\Xi}}^{+}\Lambda /{\Sigma}^0 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:mo>−</mml:mo> <mml:mo>→</mml:mo> <mml:mi>K</mml:mi>...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mn>7.33</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 by the BESIII detector at center-of-mass energies in range <e:math...