Conveners
Parallel I: B
- Jianyong Zhang (IHEP)
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吉/Ji 徐/Xu (兰州大学)12/05/2025, 16:15
We propose to investigate short-range correlations (SRCs) in nuclei by studying sub-threshold photoproduction of ϕ particles in an electron-positron collision experiment. We present a direct experimental signature for SRCs, which is deemed achievable using the Beijing Spectrometer III (BESIII). The cross sections for sub-threshold production, as well as the likelihood of detection by BESIII,...
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Dr Hiroyuki Umeeda (Jilin University)12/05/2025, 16:35
For charm mixing, it is known that the lowest order analysis in the operator product expansion (OPE) does not reproduce the experimental data, indicating the importance of power-suppressed corrections. In particular, contributions induced by quark condensates are discussed as possible sources of enhancement in the previous works. Those investigations generically imply that chiral symmetry...
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Hong-Fei Zhang (Guizhou University of Finance and Economics)12/05/2025, 16:55
We extend the nonrelativistic QCD framework to explore the nature of the newly discovered di-$J/\psi$ resonances. Assuming them as either molecule-like states or tetraquarks, we calculated their hadroproduction cross sections at the LHC. We find that the observed resonances are most likely spin-2 particles, and there should exist their spin-0 counterparts near these resonances. The ratio of...
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Vindhyawasini Prasad (Jilin University)12/05/2025, 17:15
Recent BESIII measurement of $J/\psi \to e^+e^-\pi^0$ has revealed a significant $\rho$-$\omega$ interference pattern in the di-electron invariant mass spectrum. This observed pattern is qualitatively similar to that of the pion form factor but features a relatively narrow $\rho$ resonance. Motivated by this observation, we present updated Vector Meson Dominance (VMD) predictions for the rare...
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子月/Zi-Yui 邹/Zou12/05/2025, 17:35
A nonzero electric dipole moment of a tauon, $d_{\tau}$, signals CP violation and provides an important probe for new physics. We study methods to measure $d_{\tau}$ at low energy $e^+e^-$ colliders through the processes $e^+e^- \to \gamma^*, \psi(2S) \to \tau^+\tau^-$ with $\tau^{\pm}$ decays into a charged hadron and a tau neutrino. We point out that, with measuring energies of the charged...
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Xiao Yu12/05/2025, 17:50
The scalar mesons are established for a long time, but their nature is still an open question. In this slide, we investigate the potential of categorizing their SU(3)f representations via J/ψ → SV and γS, offering a criterion that may illuminate this issue. Here, S (V ) denotes scalar (vector) mesons. Using the SU(3)f symmetry with the current data, we find that f0(500) and f0(980) are mostly...
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