A5100757520- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Black Holes and Theoretical Physics
- Nuclear physics research studies
- Catalytic C–H Functionalization Methods
- Nuclear reactor physics and engineering
- Atomic and Subatomic Physics Research
- Distributed and Parallel Computing Systems
- Cancer Immunotherapy and Biomarkers
- Gamma-ray bursts and supernovae
- Nuclear Physics and Applications
- Renewable energy and sustainable power systems
- Building energy efficiency and sustainability
- CCD and CMOS Imaging Sensors
- Particle Accelerators and Free-Electron Lasers
- Medical Imaging Techniques and Applications
- Catalytic Alkyne Reactions
Chinese Academy of Sciences
2015-2024
Czech Technical University in Prague
2015-2024
Institute of High Energy Physics
2015-2024
Karamay Central Hospital
2024
Southwest Jiaotong University
2020-2024
Nanjing University of Posts and Telecommunications
1999-2024
Hebei University of Technology
2023-2024
Fudan University
2023-2024
Pudong Medical Center
2023-2024
University of Göttingen
2020-2024
The Circular Electron Positron Collider (CEPC) is a large international scientific facility proposed by the Chinese particle physics community to explore Higgs boson and provide critical tests of underlying fundamental principles Standard Model that might reveal new physics. CEPC, be hosted in China circular underground tunnel approximately 100 km circumference, designed operate as factory producing electron-positron collisions with center-of-mass energy 240 GeV. collider will also at around...
Abstract Metasurfaces have an exceptional capacity to manipulate the phase, amplitude, polarization, or spectrum of light. However, unit cells, meta‐atoms, metasurfaces are conventionally designed using regular shapes, limiting performance improvement. The utilization with freeform shaped meta‐atoms for on‐chip ultraspectral imaging is proposed, where patterns generated controllable feature sizes and boundary curvatures feasible fabrication. These broaden design diversity enrich...
New measurements are reported on the deuteron spin structure function g_1^d. These results were obtained from deep inelastic scattering of 48.3 GeV electrons polarized deuterons in kinematic range 0.01 < x 0.9 and 1 Q^2 40 (GeV/c)^2. first high dose electron data using lithium deuteride (6Li2H) as target material. Extrapolations performed to obtain moments g_1^d, including Gamma_1^d, net quark polarization Delta Sigma.
We report the first measurement using a solid polarized target of neutron electric form factor G(n)(E) via d-->(e-->,e(')n)p. was determined from beam-target asymmetry in scattering longitudinally electrons deuterated ammonia ( 15ND3). The performed Hall C at Thomas Jefferson National Accelerator Facility quasifree kinematics with polarization perpendicular to momentum transfer. were detected magnetic spectrometer coincidence neutrons large angle segmented detector. find =...
We report new measurements of the ratio electric form factor to magnetic neutron, G(n)(E)/G(n)(M), obtained via recoil polarimetry from quasielastic 2H(e-->,e(')n-->)1H reaction at Q2 values 0.45, 1.13, and 1.45 (GeV/c)(2) with relative statistical uncertainties 7.6% 8.4% two higher points, which points have never been achieved in polarization measurements.
We have measured the spin structure functions g2p and g2d virtual photon asymmetries A2p A2d over kinematic range 0.02⩽x⩽0.8 0.7⩽Q2⩽20GeV2 by scattering 29.1 32.3 GeV longitudinally polarized electrons from transversely NH3 6LiD targets. Our g2 approximately follows twist-2 Wandzura–Wilczek calculation. The twist-3 reduced matrix elements d2p d2n are less than two standard deviations zero. data inconsistent with Burkhardt–Cottingham sum rule if there is no pathological behavior as x→0....
The electric form factor of the neutron was determined from measurements $\stackrel{\ensuremath{\rightarrow}}{d}(\stackrel{\ensuremath{\rightarrow}}{e},{e}^{\ensuremath{'}}n)p$ reaction for quasielastic kinematics. Polarized electrons were scattered off a polarized deuterated ammonia ($^{15}\mathrm{N}\mathrm{D}_{3}$) target in which deuteron polarization perpendicular to momentum transfer. detected magnetic spectrometer coincidence with neutrons large solid angle detector. We find...
We have carried out an (e,e′p) experiment at high momentum transfer and in parallel kinematics to measure the strength of nuclear spectral function S(k,E) nucleon momenta k large removal energies E. This is related presence short-range tensor correlations, was known hitherto only indirectly with considerable uncertainty from lack independent-particle region. locates by direct measurement correlated predicted theory.Received 18 May 2004DOI:https://doi.org/10.1103/PhysRevLett.93.182501©2004...
We report values for the neutron electric to magnetic form factor ratio, ${G}_{\mathit{En}}/{G}_{\mathit{Mn}}$, deduced from measurements of neutron's recoil polarization in quasielastic $^{2}\mathrm{H}$$(\stackrel{\ensuremath{\rightarrow}}{e},{e}^{'}\stackrel{\ensuremath{\rightarrow}}{n})$$^{1}\mathrm{H}$ reaction, at three ${Q}^{2}$ 0.45, 1.13, and 1.45 (GeV/c)${}^{2}$. The data ${Q}^{2}=1.13$ (GeV/c)${}^{2}$ are first direct experimental ${G}_{\mathit{En}}$ employing degrees freedom...
To achieve insights about the impact of amplified loop interference, we consider a dual-hop fullduplex (FD) massive multiple-input multiple-output (MIMO) amplify-and-forward (AF) relaying system in terms achievable ergodic rates for each user pair as well spectrum and energy efficiencies.It is assumed that base station (or relay) equipped with M Rx receive antennas Tx transmit antennas, while all sources destinations have single antenna.For such FD MIMO AF systems, closedform expressions...
Charge collection properties of particle detectors made in HV-CMOS technology were investigated before and after irradiation with reactor neutrons. Two different sensor types designed processed 180 350 nm by AMS. Edge-TCT charge measurements electrons from 90Sr source employed. Diffusion generated carriers undepleted substrate contributes significantly to the irradiation, while drift contribution prevails as shown at shaping times. The depleted region a given bias voltage was found grow...
Cross sections for semi-inclusive electroproduction of charged pions (π±) from both proton and deuteron targets were measured 0.2<x<0.5, 2<Q2<4 GeV2, 0.3<z<1, Pt2<0.2 GeV2. For Pt<0.1 GeV, we find the azimuthal dependence to be small, as expected theoretically. π+ π−, Pt is found slightly weaker than proton. In context a simple model, this implies that initial transverse momenta width d quarks larger u and, contrary expectations, momentum favored fragmentation function unfavored one.
An unprecedented access to strained tetracyclic bridgehead alkenes by reaction of easily accessible ortho-alkynylarylaldehydes with conjugated dienes is described. The process involves a chemo- and stereo-selective, gold-catalyzed, tandem intermolecular [3+2] cycloaddition/Prins-type ring-closing that allows generating structural complexity in straightforward manner. This approach for the preparation anti-Bredt compounds synthetically superior those previously reported: procedure easy...
Abstract A front-end readout system with a large dynamic range is required for the high-granularity crystal electromagnetic calorimeter (ECAL) at future Higgs factories. new commercially available ASIC, MPT2321, which offers significantly of silicon photomultiplier (SiPM), has been tested in laboratory and test beam facility. The fundamental performance metrics have characterised, including response linearity, inter-calibration factor noise performance. To quantitatively assess chip evaluate...
The differential cross section for the process $p(e,{e}^{'}p)\ensuremath{\eta}$ has been measured at ${Q}^{2}~5.7$ and $7.0(\mathrm{GeV}/c){}^{2}$ center-of-mass energies from threshold to 1.8 GeV, encompassing ${S}_{11}(1535)$ resonance, which dominates channel. This is highest momentum-transfer measurement of this exclusive date. helicity-conserving transition amplitude ${A}_{1/2}$, production extracted data. Within limited ${Q}^{2}$ now measured, quantity appears begin scaling as...
Herein we describe a reaction of ortho-carbonylated alkynyl-substituted arylaldehydes with common primary amines that can provide functionalized isoindolinone and 3-hydroxylindenamine products in high yields. Depending on the substituent size amines, two distinct pathways were exploited selectively, are, an initial aza-conjugate addition followed by hydrogen transfer to access framework unique oxa-conjugate Petasis-Ferrier rearrangement afford indenamine derivatives. In presence Et3 N,...
A silver-catalyzed domino reaction of ortho-carbonylated alkynyl-substituted arylaldehydes with conjugated dienes is described here. Through this reaction, the synthesis a variety indanone-fused cyclohexene derivatives can be achieved efficiently. The formation these tricyclic products could involve key Diels–Alder in situ generated indanenone dienophiles dienes. Particularly, accomplished high endo/exo selective way.