Zobrazeno 1 - 10
of 17 186
pro vyhledávání: '"JIA, Yu"'
In this work, we investigate a novel production mechanism of vector mesons, exemplified by the production of a neutral vector meson associated with a lepton pair in $e^+e^-$ annihilation, i.e., $e^+e^-\to V l^+l^-$ ($V=J/\psi, \rho^0, \omega, \phi$,
Externí odkaz:
http://arxiv.org/abs/2501.00592
As a sequel of our preceding work [S. Hu et al., Phys. Rev. D 108 (2023) 9, 094040], we investigate the strange-antistrange and charm-anticharm asymmetries in the parton distribution functions (PDFs) of a light flavored meson, exemplified by the firs
Externí odkaz:
http://arxiv.org/abs/2412.21152
Autor:
Wang, Chongze, Yao, Shichang, Liu, Shuyuan, Wang, Bing, Liu, Liangliang, Jia, Yu, Cho, Jun-Hyung
A family of V-based kagome metals AV$_3$Sb$_5$ (A = Cs, Rb, K) presents an intriguing platform for exploring the interplay of time-reversal symmetry breaking, nontrivial topological bands, and electron correlations, resulting in a range of exotic qua
Externí odkaz:
http://arxiv.org/abs/2412.07190
Autor:
Jia, Yu, Pan, Jichen
The rare annihilation decays of $P$-wave spin-triplet quarkonia into lepton pair have to proceed via two-photon intermediate state, which are plagued with the infrared divergence symptom. We recognize that the physical root of the IR divergence and i
Externí odkaz:
http://arxiv.org/abs/2411.18560
Continual learning methods based on pre-trained models (PTM) have recently gained attention which adapt to successive downstream tasks without catastrophic forgetting. These methods typically refrain from updating the pre-trained parameters and inste
Externí odkaz:
http://arxiv.org/abs/2411.02813
Elastic light-by-light (LbL) scattering, one of the most fascinating processes in the Standard Model (SM), has recently been observed in the ultraperipheral collisions (UPCs) of relativistic heavy ions in the Atlas and CMS experiments at the Large Ha
Externí odkaz:
http://arxiv.org/abs/2410.13781
Autor:
Yang, Shuo, Ning, Kun-Peng, Liu, Yu-Yang, Yao, Jia-Yu, Tian, Yong-Hong, Song, Yi-Bing, Yuan, Li
Large Language Models (LLMs) often suffer from catastrophic forgetting when learning multiple tasks sequentially, making continual learning (CL) essential for their dynamic deployment. Existing state-of-the-art (SOTA) methods, such as O-LoRA, typical
Externí odkaz:
http://arxiv.org/abs/2410.10179
We investigate the bound-state equations (BSEs) in two-dimensional QCD in the $N_c\to \infty$ limit, viewed from both the infinite momentum frame (IMF) and the finite momentum frame (FMF). The BSE of a meson in the original 't Hooft model, {\it viz.}
Externí odkaz:
http://arxiv.org/abs/2409.20555
The exclusive production of $J/\psi$ through Higgs boson radiative decay may serve a clean channel to extracting the charm quark Yukawa coupling. We calculate the two-loop QCD corrections to $H\rightarrow J/\psi(\Upsilon)+\gamma$ using an optimized n
Externí odkaz:
http://arxiv.org/abs/2408.17448
Confronting perturbative QCD with the hardest exclusive reactions: kaon electromagnetic form factors
Among countless channels of hard exclusive reactions, the kaon electromagnetic form factors (EMFFs) are of special interest, which have been measured up to $Q^2 \sim 50\;{\rm GeV}^2$ in the timelike domain. The kaon EMFFs thereby serve an ideal platf
Externí odkaz:
http://arxiv.org/abs/2407.21120