C. Z. Yuan
A5005449631- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Computational Physics and Python Applications
- Neutrino Physics Research
- Particle Detector Development and Performance
- Particle Accelerators and Free-Electron Lasers
- Atomic and Subatomic Physics Research
- Nuclear physics research studies
- Medical Imaging Techniques and Applications
- Superconducting Materials and Applications
- Astronomy and Astrophysical Research
- Radiation Detection and Scintillator Technologies
- Advanced NMR Techniques and Applications
- Distributed and Parallel Computing Systems
- Nutritional Studies and Diet
- Cosmology and Gravitation Theories
- Nuclear Physics and Applications
- Astrophysics and Cosmic Phenomena
- Obesity, Physical Activity, Diet
- advanced mathematical theories
- Dementia and Cognitive Impairment Research
- Stochastic processes and statistical mechanics
University of Chinese Academy of Sciences
2012-2025
Second Affiliated Hospital of Zhejiang University
2023-2025
Central South University
2025
University of Sheffield
2025
Peking University People's Hospital
2022-2025
Peking University
2022-2025
Institute of High Energy Physics
2015-2024
Fudan University
2022-2024
Zhejiang University
2023-2024
Chinese Academy of Sciences
2015-2024
The cross section for ee+ e- → π+ π- J/ψ between 3.8 and 5.5 GeV is measured with a 967 fb(-1) data sample collected by the Belle detector at or near Υ(nS) (n = 1,2,…,5) resonances. Y(4260) state observed, its resonance parameters are determined. In addition, an excess of production around 4 observed. This feature can be described Breit-Wigner parametrization properties that consistent Y(4008) was previously reported Belle. study decays, structure observed in M(π(±)J/ψ) mass spectrum 5.2σ...
The summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,717 new measurements 869 papers, we list, evaluate, average measured properties gauge bosons the recently discovered Higgs boson, leptons, quarks, mesons, baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle search limits are listed in Summary Tables. give numerous tables, figures, formulae, reviews topics...
The cross section for ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}\ensuremath{\psi}(2S)$ between threshold and $\sqrt{s}=5.5\text{ }\text{ }\mathrm{GeV}$ is measured using $673\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data on off the $\ensuremath{\Upsilon}(4S)$ resonance collected with Belle detector at KEKB. Two resonant structures are observed in...
The cross section for ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}J/\ensuremath{\psi}$ between 3.8 and $5.5\text{ }\text{ }\mathrm{GeV}/{c}^{2}$ is measured using a $548\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data sample collected on or near the $\ensuremath{\Upsilon}(4S)$ resonance with Belle detector at KEKB. A peak $4.25\text{ }\mathrm{GeV}/{c}^{2}$, corresponding to so called $Y(4260)$, observed. In addition, there another...
An update of the ALEPH non-strange spectral functions from hadronic $$\tau $$ decays is presented. Compared to 2005 publication, main improvement related use a new method unfold measured mass spectra detector effects. This procedure also corrects previous problem in correlations between unfolded bins. Results QCD studies and for evaluation vacuum polarisation contribution anomalous muon magnetic moment are derived using functions. They found agreement with published results based on set
Using recently published, high-precision π + − cross section data by the BABAR experiment from analysis of e events with high-energy photon radiation in initial state, we reevaluate lowest order hadronic contribution $(a_{\mu}^{\mathrm{had},\mathrm{LO}})$ to anomalous magnetic moment muon. We employ newly developed software featuring improved interpolation and averaging, more accurate error propagation systematic validation. With new data, discrepancy between −- τ-based results for dominant...
We report measurement of the cross section $e^+e^-\to \pi^+\pi^-\psi(2S)$ between 4.0 and $5.5 {\rm GeV}$, based on an analysis initial state radiation events in a $980 \rm fb^{-1}$ data sample recorded with Belle detector. The properties $Y(4360)$ $Y(4660)$ states are determined. Fitting mass spectrum $\pi^+\pi^-\psi(2S)$ two coherent Breit-Wigner functions, we find solutions identical width but different couplings to electron-positron pairs: $M_{Y(4360)} = (4347\pm 6\pm 3) MeV}/c^2$,...
The process $\gamma \gamma \to \phi \jpsi$ is measured for $\phi masses between threshold and 5 GeV/${\it c}^2$, using a data sample of 825 fb$^{-1}$ collected with the Belle detector. A narrow peak $8.8^{+4.2}_{-3.2}$ events, significance 3.2 standard deviations including systematic uncertainty, observed. mass natural width structure (named X(4350)) are to be $(4350.6^{+4.6}_{-5.1}(\rm{stat})\pm 0.7(\rm{syst})) \hbox{MeV}/{\it c}^2$ $(13^{+18}_{-9}(\rm{stat})\pm 4(\rm{syst})) \hbox{MeV}$,...
Importance Age-standardized dementia mortality rates are on the rise. Whether long-term consumption of olive oil and diet quality associated with dementia-related death is unknown. Objective To examine association intake subsequent risk assess joint substitution for other fats. Design, Setting, Participants This prospective cohort study examined data from Nurses’ Health Study (NHS; 1990-2018) Professionals Follow-Up (HPFS; 1990-2018). The population included women NHS men HPFS who were free...
The cross sections for ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\phi}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\phi}{f}_{0}(980)$ are measured from threshold to $\sqrt{s}=3.0\text{ }\text{ }\mathrm{GeV}$ using initial-state radiation. analysis is based on a data sample of $673\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected below the $\ensuremath{\Upsilon}(4S)$ resonance with Belle...
The cross section for e^+e^- \to \eta J/\psi between \sqrt{s}=3.8 GeV/c^2 and 5.3 is measured via initial state radiation using 980 fb^{-1} of data on around the \Upsilon(nS)(n=1,2,3,4,5) resonances collected with Belle detector at KEKB. Two resonant structures \psi(4040) \psi(4160) are observed in invariant mass distribution. Fitting spectrum coherent sum two Breit-Wigner functions, one obtains BR(\psi(4040)\to\eta J/\psi)\cdot\Gamma_{ee}^{\psi(4040)} = (4.8\pm0.9\pm1.4) eV...
The BESIII and the LHCb became leading experiments in study of exotic states after Belle BaBar finished their data taking first decade this century. We review progress XYZ at with unique samples [Formula: see text] annihilation center-of-mass energies 3.8–4.6 GeV collision 7, 8, 13 TeV, respectively. With these samples, we have deepened our understanding most famous charmonium-like text], as well other similar like text]. also discuss perspectives future experiments.
We present the first measurements of absolute branching fractions ${\mathrm{\ensuremath{\Xi}}}_{c}^{0}$ decays into ${\mathrm{\ensuremath{\Xi}}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$, $\mathrm{\ensuremath{\Lambda}}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$, and $p{K}^{\ensuremath{-}}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ final states. The are made using a dataset comprising $(772\ifmmode\pm\else\textpm\fi{}11)\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs collected...
In response to the health assurance challenges faced by elderly population in Chinas aging society and mitigate shortage of medical resources while improving rehabilitation rate patients with central nervous system injuries, research on lower limb exoskeleton robots has been widely conducted. Since 1960s, countries such as Switzerland, United States, Netherlands, Germany, Japan, China have successively developed relatively mature standing recumbent systems. This paper builds kinematic...