A5107195669- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Advanced Fiber Laser Technologies
- Black Holes and Theoretical Physics
- Advanced Fiber Optic Sensors
- Photonic Crystal and Fiber Optics
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Complex Network Analysis Techniques
- Medical Imaging Techniques and Applications
- Opinion Dynamics and Social Influence
- Planetary Science and Exploration
- Astro and Planetary Science
- Advanced Data Storage Technologies
- Nuclear physics research studies
- Advanced Mathematical Physics Problems
- Isotope Analysis in Ecology
- Particle Detector Development and Performance
- Nonlinear Waves and Solitons
- Laser-Plasma Interactions and Diagnostics
- High-pressure geophysics and materials
- Advanced Photonic Communication Systems
- Laser-Matter Interactions and Applications
- Superconducting Materials and Applications
Hebei Medical University
2024
Xingtai People's Hospital
2024
Institute of Disaster Prevention
2023
Henan University of Economic and Law
2019-2022
Purple Mountain Observatory
2019-2021
University of Science and Technology of China
2010-2020
Uppsala University
2015-2019
Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application
2019
Beihang University
2016-2017
Institute for Chemical and Physical Processes
2012-2015
Dual-comb spectroscopy holds the promise as real-time, high-resolution tools. However, in its conventional schemes, stringent requirement on coherence between two lasers requires sophisticated control systems. By replacing electronics with an all-optical dual-comb lasing scheme, a simplified scheme is demonstrated using one dual-wavelength, passively mode-locked fiber laser. Pulses intracavity-dispersion-determined repetition-frequency difference are shown to have good mutual and stability....
Hadronic transitions of ${\ensuremath{\chi}}_{cJ}\ensuremath{\rightarrow}{\ensuremath{\eta}}_{c}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ ($J=0$, 1, 2) are searched for using a sample $1.06\ifmmode\times\else\texttimes\fi{}{10}^{8}$ $\ensuremath{\psi}(3686)$ events collected with the BESIII detector at BEPCII storage ring. The ${\ensuremath{\eta}}_{c}$ is reconstructed ${K}_{S}^{0}{K}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\pi}}^{\ensuremath{\mp}}$ and...
Using a sample of $1.06\ifmmode\times\else\texttimes\fi{}{10}^{8}$ ${\ensuremath{\psi}}^{\ensuremath{'}}$ decays collected by the BESIII detector, ${\ensuremath{\chi}}_{c0}$ and ${\ensuremath{\chi}}_{c2}$ into ${\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ $\ensuremath{\eta}\ensuremath{\eta}$ are studied. The branching fraction results...
With a sample of (225.2±2.8)×10(6) J/ψ events registered in the BESIII detector, J/ψ→γπ(+)π(-)η(') is studied using two η(') decay modes: η(')→π(+)π(-)η and η(')→γρ(0). The X(1835), which was previously observed by BESII, confirmed with statistical significance that larger than 20σ. In addition, π(+)π(-)η(') invariant-mass spectrum, X(2120) X(2370), are significances 7.2σ 6.4σ, respectively. For angular distribution radiative photon consistent expectations for pseudoscalar.
The decays $\chi_{cJ}\to\gamma V$ ($V=\phi, \rho^0, \omega$) are studied with a sample of radiative $\psip\to\gamma\chi_{cJ}$ events in $(1.06\pm0.04)\times 10^{8} \psip$ collected the BESIII detector. branching fractions determined to be: ${\cal B}(\chi_{c1}\to \gamma\phi)=(25.8\pm 5.2\pm 2.3)\times 10^{-6}$, \gamma\rho^0)=(228\pm 13\pm 22)\times and \gamma\omega)=(69.7\pm 7.2\pm 6.6)\times 10^{-6}$. decay $\chi_{c1}\to \gamma\phi$ is observed for first time. Upper limits at 90% confidence...
The decays J/ψ → γ π+ π- π0 and are analyzed using a sample of 225×10(6) events collected with the BESIII detector. decay η(1405) f(0)(980)π0 large isospin violation is observed for first time. width f(0)(980) in dipion mass spectra anomalously narrower than world average. Decay rates three-pion η' also measured precisely.
A partial wave analysis of the $p\overline{p}$ mass-threshold enhancement in reaction $J/\ensuremath{\psi}\ensuremath{\rightarrow}\ensuremath{\gamma}p\overline{p}$ is used to determine its ${J}^{\mathrm{PC}}$ quantum numbers be ${0}^{\ensuremath{-}+}$, peak mass below threshold at $M={1832}_{\ensuremath{-}5}^{+19}(\mathrm{stat}{)}_{\ensuremath{-}17}^{+18}(\mathrm{syst})\ifmmode\pm\else\textpm\fi{}19(\mathrm{model})\text{ }\text{ }\mathrm{MeV}/{c}^{2}$, and total width...
We present measurements of the charmonium state h(c)(1P(1)) made with 106x10(6) psi' events collected by BESIII at BEPCII. Clear signals are observed for psi'-->pi0 h(c) and without subsequent radiative decay h(c)-->gamma eta(c). First absolute branching ratios B(psi'-->pi0 h(c)) = (8.4+/-1.3+/-1.0) x 10(-4) B(h(c)-->gamma eta(c)) (54.3+/-6.7+/-5.2)% presented. A statistics-limited determination previously unmeasured width leads to an upper limit Gamma(h(c))<1.44 MeV (90% confidence)....
Dual-comb lasers from which asynchronous ultrashort pulses can be simultaneously generated have recently become an interesting research subject. They could intriguing alternative to the current dual-laser optical-frequency-comb source with highly sophisticated electronic control systems. If through a common light path traveled by all pulses, common-mode noises between spectral lines of different pulse trains significantly reduced. Therefore, coherent dual-comb generation completely...
Using samples of 2.25*10^8 J/psi events and 1.06*10^8 psi' collected with the BES III detector, we study f0(980) to a0(980) transitions in processes --> phi chi_c1 pi^0 f0(980), respectively. Evidence for is found a significance 3.4 sigma, while case transition, 1.9 sigma. Measurements upper limits both branching ratios mixing intensities are determined.
Using a $478\text{ }\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$ data sample collected with the BESIII detector operating at Beijing Electron Positron Collider storage ring center-of-mass energy of $\sqrt{s}=4.009\text{ }\mathrm{GeV}$, production ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\eta}J/\ensuremath{\psi}$ is observed for first time statistical significance greater than $10\ensuremath{\sigma}$. The Born cross section measured to be...
The Dalitz plot of $\eta^{\prime} \to \eta \pi^+ \pi^-$ decay is studied using $(225.2\pm2.8)\times 10^6$ $\jpsi$ events collected with the BESIII detector at BEPCII $e^+e^-$ collider. With largest sample $\eta^{\prime}$ decays to date, parameters are determined in a generalized and linear representation. Also branching fraction $\jpsi \gamma \eta^{\prime}$ be $(4.84\pm0.03\pm0.24)\times 10^{-3}$, where first error statistical second systematic.
The article “Potential false-positive rate among the ‘asymptomatic infected individuals’ in close contacts of COVID-19 patients” was under strong discussion after pre-published. Questions from readers mainly focused on article’s results and conclusions were depended theoretical deduction, but not field epidemiology data further researches needed to prove current theory. Based previous discussions, decided be offline by editorial board pre-publish lists.
The mass and width of the lowest-lying S-wave spin singlet charmonium state, η(c), are measured using a data sample 1.06×10(8) ψ(3686) decays collected with BESIII detector at BEPCII storage ring. We use model that incorporates full interference between signal reaction, ψ(3686)→γη(c), nonresonant radiative background to describe line shape η(c) successfully. measure be 2984.3±0.6±0.6 MeV/c(2) total 32.0±1.2±1.0 MeV, where first errors statistical second systematic.
We present results of a study the decay $J/\psi\rightarrow\omega\eta\pi^+\pi^-$ using sample $(225.2\pm2.8)\times10^6$ $J/\psi$ events collected by BESIII detector, and report observation new process $J/\psi\rightarrow \omega X(1870)$ in which X(1870) decays to $a_0(980)\pi$. The statistical significance this is larger than $7.2\sigma$. Signals for f_1(1285)$ \omega\eta(1405)$ are also observed $\eta\pi^+\pi^-$ spectrum, with significances much $10\sigma$.
The decays psi'->gamma pi^0, gamma eta and eta' are studied using data collected with the BESIII detector at BEPCII e^+e^- collider. Processes pi^0 observed for first time signal significances of 4.6 sigma 4.3 sigma, respectively. branching fractions determined to be: B(psi'->gamma pi^0)=(1.58+-0.40+-0.13)x10^{-6}, eta)=(1.38+-0.48+-0.09)x10^{-6}, eta')=(126+-3+-8) x 10^{-6}, where errors statistical second ones systematic.
Decays of $\chi_{c1}$ to vector meson pairs $\phi\phi$, $\omega\omega$ and $\omega\phi$ are observed for the first time using $(106\pm4)\times 10^6$ $\psip$ events accumulated at BESIII detector BEPCII $e^+e^-$ collider. The branching fractions measured be $(4.4\pm 0.3\pm 0.5)\times 10^{-4}$, $(6.0\pm 0.7)\times $(2.2\pm 0.6\pm 0.2)\times 10^{-5}$, $\chi_{c1}\to \phi\phi$, $\omega\omega$, $\omega\phi$, respectively. observation decays into a pair mesons indicates that hadron helicity...
Microwave photonic solutions of frequency measurement have advantages in broad coverage, but achieving high-resolution remains a challenge. Those schemes based on optical combs could achieve over range. Here, dead-band-free, microwave scheme undersampling the signal by three pulse sequences generated from triple-wavelength mode-locked fiber laser is proposed and demonstrated. The ultrashort pulses one cavity slightly different repetition rates due to chromatic dispersion. This eliminates...
Experimental and theoretical spectra of<italic>N</italic>-methylacetamide and<italic>N</italic>-methyltrifluoroacetamide at the K-edges are reported.
We report hybrid density functional theory-molecular mechanics (DFT/MM) calculations performed for glycine in water solution at different pH values. In this paper, we discuss several aspects of the quantum mechanics-molecular (QM/MM) simulations where dynamics and spectral binding energy shifts are computed sequentially, latter evaluated over a set configurations generated by molecular or Car-Parrinello simulations. used model, core ionization takes place as mechanical (QM) system modeled...
Jun N-terminal kinase pathway-associated phosphatase (JKAP) regulates CD4+ T-cell differentiation and immunity, which are linked to mental disorders. This study aimed explore the relationships between JKAP T helper 17 (Th17)/regulatory (Treg) ratio, as well their associations with anxiety depression in postpartum women. Serum were measured by enzyme-linked immunosorbent assay blood Th17 Treg cells flow cytometry 250 Anxiety evaluated 6-item State-Trait Inventory (STAI6) Edinburgh Postnatal...