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Near-threshold resonance in $e^{+}e^{-}\rightarrow\Lambda_{c}\bar{\Lambda}_{c}$ process
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abstract
We discuss the influence of various contributions of the $\Lambda_{c}\bar{\Lambda}_{c}$ potential on the energy dependence of the cross section $e^{+}e^{-}\rightarrow\Lambda_{c}\bar{\Lambda}_{c}$ near the threshold. New BESIII experimental data on the cross section and electromagnetic form factors $G_{E}$ and $G_{M}$ are taken into account. Our predictions are in good agreement with experimental data. We predict a bound state of $\Lambda_{c}\bar{\Lambda}_{c}$ at energy $\sim 38~\textrm{MeV}$ below the threshold that may manifest itself in anomalous behavior of light meson production cross sections in a given energy region.
Forward citations
Cited by 2 Pith papers
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Electromagnetic form factors of singly charmed baryons $\Sigma_c$ and $\Lambda_c$ in a covariant quark-diquark model
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.
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Electromagnetic form factors of hyperons in the timelike region: A short review
A review of recent experimental and theoretical results on hyperon electromagnetic form factors in the timelike region, highlighting near-threshold final-state interactions.
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