Ling-Yun Dai

activity

20242026

collaborators

6 papers

hep-ph2026

On the quantum numbers of the $X (1880)$

Qin-He Yang, Ling-Yun Dai, Ulf-G. MeiÃner

We study the properties of the $X (1880)$ , the structure around the $p ˉ p$ threshold that appears in the $3 (I ¨ ^{+} I ¨ ^{-})$ invariant mass spectrum in the decay process of $J/Ï\to Î…

hep-ph2025

Study of electron-positron annihilation into $K K ˉ I ¨ $ within resonance chiral theory

Bing-Hai Qin, Wen Qin, Ling-Yun Dai

In this paper, a coherent study of the $e^{+} e^{-}$ annihilation into $K^{+} K^{-} I ¨ ^{0}$ , $K_{S}^{0} K_{L}^{0} I ¨ ^{0}$ and $K_{S}^{0} K^{\pm} I ¨ ^{\mp}$ is carried out within the framework of resonance chiral theo…

hep-ph2024

New insights into the doubly charmed exotic mesons

Di Guo, Qin-He Yang, Ling-Yun Dai +1

Using effective Lagrangians constrained by the heavy quark spin symmetry and chiral symmetry, for the light quarks, we analyze the $D^{0} D^{0} I ¨ ^{+}$ , $D ˉ^{0} D^{0} I ¨ ^{0}$ and $D^0\bar{D}…

hep-ph2024

Electromagnetic form factors of hyperons in the timelike region: A short review

Ling-Yun Dai, Johann Haidenbauer, Ulf-G. MeiÃner

We review recent experimental and theoretical results for the electromagnetic form factors of hyperons (Y) in the timelike region, accessible in the reactions $e^{+} e^{-} \to Y ˉ Y$ .…

nucl-th2024

Study of the electromagnetic form factors of the nucleons in the timelike region

Qin-He Yang, Di Guo, Ming-Yan Li +3

The electromagnetic form factors $G_{E}$ and $G_{M}$ of the proton and neutron in the timelike region are extracted in a study of the processes $e^{+} e^{-} \to p ˉ p$ and $e…

hep-ph2024

Study of the timelike electromagnetic form factors of the $I^_{c}$

Di Guo, Qin-He Yang, Ling-Yun Dai

In this paper, the reaction of electron-positron annihilation into $I^_{c}^{+} I^ˉ _{c}^{-}$ is investigated. The $I^_{c}^{+} I^ˉ _{c}^{-}$ scattering amplitudes are obtained by solving the Lipp…

On the quantum numbers of the X(1880)

Study of electron-positron annihilation into KKˉI¨ within resonance chiral theory

New insights into the doubly charmed exotic mesons

Electromagnetic form factors of hyperons in the timelike region: A short review

Study of the electromagnetic form factors of the nucleons in the timelike region

Study of the timelike electromagnetic form factors of the I^c​

On the quantum numbers of the $X (1880)$

Study of electron-positron annihilation into $K K ˉ I ¨ $ within resonance chiral theory

Study of the timelike electromagnetic form factors of the $I^_{c}$