Yutong Feng
A5078946134- Photonic Crystal and Fiber Optics
- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Advanced Fiber Laser Technologies
- Optical Network Technologies
- Advanced Fiber Optic Sensors
- High-Energy Particle Collisions Research
- Black Holes and Theoretical Physics
- Semiconductor Lasers and Optical Devices
- Solid State Laser Technologies
- Laser-Matter Interactions and Applications
- Orbital Angular Momentum in Optics
- Neutrino Physics Research
- Spectroscopy and Laser Applications
- Atmospheric and Environmental Gas Dynamics
- Laser Design and Applications
- Combustion and flame dynamics
- Medical Imaging Techniques and Applications
- Photonic and Optical Devices
- Photorefractive and Nonlinear Optics
- Generative Adversarial Networks and Image Synthesis
- Atomic and Subatomic Physics Research
- Advanced Chemical Physics Studies
- Thermochemical Biomass Conversion Processes
- Luminescence Properties of Advanced Materials
University of Science and Technology of China
2024-2025
Alibaba Group (United States)
2024
Chinese Academy of Sciences
2007-2024
University of Chinese Academy of Sciences
2024
Wuhan Textile University
2024
Qingdao Institute of Bioenergy and Bioprocess Technology
2023-2024
Qinghai New Energy (China)
2024
University of Southampton
2013-2022
Guangzhou Xinhua University
2022
Anhui Xinhua University
2022
The beta decay of the lightest charmed baryon $${\Lambda }_{c}^{+}$$ provides unique insights into fundamental mechanism strong and electro-weak interactions, serving as a testbed for investigating non-perturbative quantum chromodynamics constraining Cabibbo-Kobayashi-Maskawa (CKM) matrix parameters. This article presents first observation Cabibbo-suppressed }_{c}^{+}\to n{e}^{+}{\nu }_{e}$$ , utilizing 4.5 fb−1 electron-positron annihilation data collected with BESIII detector. A novel...
Based on 6.1 fb^{-1} of e^{+}e^{-} annihilation data collected at center-of-mass energies from 4.600 to 4.843 GeV with the BESIII detector BEPCII collider, a partial wave analysis Λ_{c}^{+}→Λπ^{+}η is performed, and branching fractions decay asymmetry parameters intermediate processes are determined. The process Λ_{c}^{+}→Λa_{0}(980)^{+} observed for first time, evidence pentaquark candidate Σ(1380)^{+} decaying into Λπ^{+} found statistical significance larger than 3σ mass width fixed...
Structured light, with spatially varying phase or polarization distributions, has given rise to many novel applications in fields ranging from optical communication laser-based material processing. However the efficient and flexible generation of such beams a compact laser source at practical output powers still remains great challenge. Here we describe an approach capable addressing this need based on coherent combination multiple tailored Gaussian emitted multicore fibre (MCF) amplifier....
Abstract Numerous approaches have been developed to generate optical vortex beams carrying orbital angular momentum (OAM) over the past decades, but direct intracavity generation of such with practical output powers in femtosecond regime still remains a challenge. Here we propose and experimentally demonstrate efficient high-peak-power pulses from Mamyshev oscillator (MO) based on few-mode polarization-maintaining (PM) ytterbium-doped fibers (YDFs). By employing an appropriate transverse...
We use a model to investigate both the temporal and spectral characteristics of signal lightwave which has been spectrally broadened through phase modulation with maximal-length sequence (MLS), is common type pseudo-random bit sequence. The enhancement stimulated Brillouin scattering (SBS) threshold modulated in fiber system evaluated by numerically simulating coupled three-wave SBS interaction equations. find that can build up on nanosecond-level time scale short fiber, reduce suppressing...
We report here the first implementation of chemically specific imaging in exhaust plume a gas turbine typical those used for propulsion commercial aircraft. The method is chemical species tomography (CST) and target CO2, absorbing near-infrared at 1999.4 nm. A total 126 beams propagate transverse to axis, along 7 m paths coplanar geometry, probe central region diameter ≈1.5m. CO2 absorption spectrum measured using tunable diode laser spectroscopy with wavelength modulation, second harmonic...
We demonstrate a high-energy and high-average power Mamyshev oscillator based on high performance large-mode-area step-index germanosilicate-cladding Yb-doped fiber. The oscillation of higher-order modes is effectively suppressed by employing appropriate intracavity spatial mode filtering, allowing significant scaling single pulse energy. laser directly generates nearly diffraction-limited beam with an average 17 W operating at the fundamental repetition rate 14.01 MHz, corresponding to...
One of the main goals studying semileptonic decays in flavor physics is to gain a better understanding hadronic transitions nonperturbative region Quantum Chromodynamics. This involves measuring Cabibbo-Kobayashi-Maskawa matrix elements, form factors, and comparing them with theoretical predictions. We report first study decay <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msup><a:mrow><a:mi>D</a:mi></a:mrow><a:mrow><a:mn>0</a:mn></a:mrow></a:msup><a:mo...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo stretchy="false">(</a:mo><a:mn>27.12</a:mn><a:mo>±</a:mo><a:mn>0.14</a:mn><a:mo stretchy="false">)</a:mo><a:mo>×</a:mo><a:msup><a:mrow><a:mn>10</a:mn></a:mrow><a:mrow><a:mn>8</a:mn></a:mrow></a:msup></a:mrow></a:math> <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mrow><e:mi>ψ</e:mi><e:mo stretchy="false">(</e:mo><e:mn>2</e:mn><e:mi>S</e:mi><e:mo...
We measure the Born cross section for reaction <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msup><a:mrow><a:mi>e</a:mi></a:mrow><a:mrow><a:mo>+</a:mo></a:mrow></a:msup><a:msup><a:mrow><a:mi>e</a:mi></a:mrow><a:mrow><a:mo>−</a:mo></a:mrow></a:msup><a:mo stretchy="false">→</a:mo><a:mi>η</a:mi><a:msub><a:mrow><a:mi>h</a:mi></a:mrow><a:mrow><a:mi>c</a:mi></a:mrow></a:msub></a:mrow></a:math> from <d:math xmlns:d="http://www.w3.org/1998/Math/MathML"...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo stretchy="false">(</a:mo><a:mn>2.712</a:mn><a:mo>±</a:mo><a:mn>0.014</a:mn><a:mo stretchy="false">)</a:mo><a:mo>×</a:mo><a:msup><a:mrow><a:mn>10</a:mn></a:mrow><a:mrow><a:mn>9</a:mn></a:mrow></a:msup><a:mtext> </a:mtext><a:mtext> </a:mtext><a:mi>ψ</a:mi><a:mo stretchy="false">(</a:mo><a:mn>2</a:mn><a:mi>S</a:mi><a:mo stretchy="false">)</a:mo></a:mrow></a:math> events collected with the BESIII detector...
The <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>C</a:mi><a:mi>P</a:mi></a:math>-even fractions (<c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:msub><c:mi>F</c:mi><c:mo>+</c:mo></c:msub></c:math>) of the decays <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mrow><e:msup><e:mrow><e:mi>D</e:mi></e:mrow><e:mrow><e:mn>0</e:mn></e:mrow></e:msup><e:mo...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mn>7.9</a:mn><a:mrow><a:mi mathvariant="normal">f</a:mi><a:msup><a:mi mathvariant="normal">b</a:mi><a:mrow><a:mo>−</a:mo><a:mn>1</a:mn></a:mrow></a:msup></a:mrow></a:math> of <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:msup><e:mi>e</e:mi><e:mo>+</e:mo></e:msup><e:msup><e:mi>e</e:mi><e:mo>−</e:mo></e:msup></e:math> collision data collected at <g:math...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo stretchy="false">(</a:mo><a:mrow><a:mn>2712</a:mn><a:mo>±</a:mo><a:mn>14</a:mn></a:mrow><a:mo stretchy="false">)</a:mo><a:mo>×</a:mo><a:msup><a:mrow><a:mn>10</a:mn></a:mrow><a:mrow><a:mn>6</a:mn></a:mrow></a:msup></a:mrow></a:math> <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mrow><e:mi>ψ</e:mi><e:mo stretchy="false">(</e:mo><e:mn>2</e:mn><e:mi>S</e:mi><e:mo...
Using $e^+e^-$ collision data at 13 center-of-mass energies ranging from 4.600 to 4.950 GeV collected with the BESIII detector, we search for unmeasured $e^+e^-\to K_S^0 h_c$ process . No significant signal is observed, and upper limits of Born cross sections each energy are presented.
Using a data sample of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo stretchy="false">(</a:mo><a:mn>10087</a:mn><a:mo>±</a:mo><a:mn>44</a:mn><a:mo stretchy="false">)</a:mo><a:mo>×</a:mo><a:mrow><a:msup><a:mrow><a:mn>10</a:mn></a:mrow><a:mrow><a:mn>6</a:mn></a:mrow></a:msup></a:mrow></a:mrow></a:math> <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mi>J</e:mi><e:mo>/</e:mo><e:mi>ψ</e:mi></e:math> events collected with the BESIII...
Utilizing <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mn>4.5</a:mn><a:mtext> </a:mtext><a:mtext> </a:mtext><a:msup><a:mrow><a:mi>fb</a:mi></a:mrow><a:mrow><a:mo>−</a:mo><a:mn>1</a:mn></a:mrow></a:msup></a:mrow></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> annihilation data collected with the BESIII detector at BEPCII...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mn>20.3</a:mn><a:mtext> </a:mtext><a:mtext> </a:mtext><a:msup><a:mrow><a:mi>fb</a:mi></a:mrow><a:mrow><a:mo>−</a:mo><a:mn>1</a:mn></a:mrow></a:msup></a:mrow></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 at the center-of-mass energy 3.773 GeV with...
A bstract Based on (2712 . 4 ± 14 3) × 10 6 ψ (3686) events collected at the BESIII detector operating BEPCII collider, we present first observation of decay $$ \psi (3686)\to {K}^{-}\Lambda (1520){\overline{\Xi}}^{+} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>ψ</mml:mi> <mml:mfenced> <mml:mn>3686</mml:mn> </mml:mfenced> <mml:mo>→</mml:mo> <mml:msup> <mml:mi>K</mml:mi> <mml:mo>−</mml:mo> </mml:msup> <mml:mi>Λ</mml:mi> <mml:mn>1520</mml:mn> <mml:mover>...
A bstract We report an improved study of the semileptonic decay $$ {D}^0\to {\overline{K}}^0{\pi}^{-}{e}^{+}{\nu}_e <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>D</mml:mi> <mml:mn>0</mml:mn> </mml:msup> <mml:mo>→</mml:mo> <mml:mover> <mml:mi>K</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mi>π</mml:mi> <mml:mo>−</mml:mo> <mml:mi>e</mml:mi> <mml:mo>+</mml:mo> <mml:msub> <mml:mi>ν</mml:mi> </mml:msub> </mml:math> based on a sample 7.9 fb − 1 e + annihilation...
A search for <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msub><a:mrow><a:mi>η</a:mi></a:mrow><a:mrow><a:mi>c</a:mi></a:mrow></a:msub><a:mo stretchy="false">(</a:mo><a:mn>2</a:mn><a:mi>S</a:mi><a:mo stretchy="false">)</a:mo><a:mo stretchy="false">→</a:mo><a:mi>p</a:mi><a:mover accent="true"><a:mrow><a:mi>p</a:mi></a:mrow><a:mrow><a:mo...
Using <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo stretchy="false">(</a:mo><a:mn>27.12</a:mn><a:mo>±</a:mo><a:mn>0.14</a:mn><a:mo stretchy="false">)</a:mo><a:mo>×</a:mo><a:msup><a:mrow><a:mn>10</a:mn></a:mrow><a:mrow><a:mn>8</a:mn></a:mrow></a:msup></a:mrow></a:math> <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mrow><e:mi>ψ</e:mi><e:mo stretchy="false">(</e:mo><e:mn>3686</e:mn><e:mo...
By analyzing <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mn>7.93</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 at the center-of-mass energy 3.773 GeV with BESIII detector operated...