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

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arxiv 2412.07543 v1 pith:GWQ3MTQP submitted 2024-12-10 hep-ph hep-exnucl-th

classification hep-phhep-exnucl-th
keywords lambdasigmaelectromagneticfactorsformhyperonsomegaregion
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We review recent experimental and theoretical results for the electromagnetic form factors of hyperons (Y) in the timelike region, accessible in the reactions $e^+e^-\to \bar YY$. Specifically, we focus on the final states $\bar \Lambda\Lambda$, $\bar\Lambda\Sigma^0$/$\bar \Sigma^0\Lambda$, $\bar \Sigma\Sigma$, $\bar \Xi\Xi$, and $\bar\Omega\Omega$. The $\bar \Lambda_c\Lambda_c$ system is also discussed.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Electromagnetic form factors of singly charmed baryons $\Sigma_c$ and $\Lambda_c$ in a covariant quark-diquark model

    hep-ph 2026-07 conditional novelty 4.0 of 10

    Spacelike electromagnetic form factors of Σc and Λc are computed in a covariant quark-diquark model, finding compact charge distributions and a charm-quark-dominated magnetic form factor for Λc.

  2. The electromagnetic form factors of $\Sigma$ and $\Sigma^0 \to \Lambda$ transition in the timelike region

    hep-ph 2025-07 conditional novelty 4.0 of 10

    An extended vector meson dominance model with excited rho, omega, and phi states reproduces e+e- to Sigma Sigma-bar and e+e- to Lambda Sigma-zero data, and predicts unmeasured form factor ratios and phases.

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