Zobrazeno 1 - 10
of 120
pro vyhledávání: '"Zeng, Fancong"'
Coherent synchrotron radiations (CSR) emitted by a high-brightness electron beam during transport in a bending magnet is a double-edged sword in electron accelerators. While CSR contributes to a stronger radiation field than the incoherent radiation,
Externí odkaz:
http://arxiv.org/abs/2403.19938
High peak current electron beams are essential for x-ray free-electron lasers (FELs), and generally realized through multi-stage compression with symmetric C-shape four-bend chicanes. However, the coherent synchrotron radiations (CSR), emitted for wa
Externí odkaz:
http://arxiv.org/abs/2403.06101
The most significant advances in the accelerator-based light sources (i.e., x-ray free electron lasers) are driven by the production of the high final peak current in the last several decades. As a prerequisite to attain the proposed high brightness,
Externí odkaz:
http://arxiv.org/abs/2311.14896
Publikováno v:
Chin.Phys.C 48 (2024) 5, 054102
We embark on a systematical analysis of the quark and gluon gravitational form factors (GFFs) of the proton, by connecting energy-momentum tensor (EMT) and the near-threshold vector meson photoproduction (NTVMP). Concretely, the quark contributions o
Externí odkaz:
http://arxiv.org/abs/2308.04644
Autor:
Zeng, Fancong1 (AUTHOR), Xu, Lin1,2 (AUTHOR) linxu@jlu.edu.cn, Xing, Jiahe1 (AUTHOR), Wu, Yanjie1 (AUTHOR), Zhang, Yuhong1 (AUTHOR), Zhang, Huan1 (AUTHOR), Hu, Chencheng1 (AUTHOR), Dong, Biao1 (AUTHOR), Bai, Xue1 (AUTHOR), Song, Hongwei1,3 (AUTHOR) songhw@jlu.edu.cn
Publikováno v:
Advanced Science. 9/11/2024, Vol. 11 Issue 34, p1-13. 13p.
Inspired by the recent Hall C and GlueX measurements of $J/\psi$ photoproduction, a systematic analysis of the contribution of quantum anomalous energy (QAE) to the proton mass is carried out under the framework of the vector meson dominance model. T
Externí odkaz:
http://arxiv.org/abs/2210.01994
Publikováno v:
Chin.Phys.C 47 (2023) 074101
Inspired by the recent near-threshold $J/\psi$ photoproduction measurements, we discuss gluon gravitational form factors (GFFs) and internal properties of the proton. This work presents a complete analysis of the proton gluon GFFs connecting the gluo
Externí odkaz:
http://arxiv.org/abs/2208.03186
Publikováno v:
Sci.China Phys.Mech.Astron. 66 (2023) 232012
As it involves the lightest physical states excited from the vacuum by the vector quark current, near-threshold $\rho^0$ photoproduction is considered a possible way to research the proton radius and the absolute value of the scattering lengths of th
Externí odkaz:
http://arxiv.org/abs/2206.09170
Publikováno v:
Phys. Rev. C 106, 015202 (2022)
Under the framework of Vector Meson Dominance model, the value of scattering length can be expressed as a function of the ratio between total cross section $\sigma (W)$ and $R (W)$, where $R(W)$ is the ratio between final momentum $|{\bf p}_3 |$ and
Externí odkaz:
http://arxiv.org/abs/2205.07661
In this work, the cross-section of the reaction $\gamma p \rightarrow V(J/\psi,\psi(2S)) p$ from the production threshold to medium energy is studied and systematically analyzed within two gluon exchange model. The obtained numerical results are in a
Externí odkaz:
http://arxiv.org/abs/2204.07294