U.-G. Meißner

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hep-ph2024

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

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

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

hep-ph2024

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

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

We study the properties of the $X (1880)$ , the structure around the $p ˉ p$ threshold that appears in the $3 (π^{+} π^{-})$ invariant mass spectrum in the decay process of $J/ψ\to γ3(π…

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

On the quantum numbers of the X(1880)

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