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The electromagnetic form factors and spin polarization of $\Lambda_c^+$ in the process $e^+ e^- \to \Lambda^+_c \bar{\Lambda}^-_c$
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abstract
The total cross sections of the process $e^+ e^-\to \Lambda_c^+ \bar{\Lambda}_c^-$ close to the threshold are calculated within the vector meson dominance model. It is found that the theoretical results can describe the current experimental measurements. In particular, the results for the angular distribution parameters about the differential cross section are consistent with the experiments from BESIII Collaboration. In addition, the relative phase $\Delta \Phi$ of the electromagnetic form factors was given, and the spin polarization of $\Lambda_c^+$ is predicted at center-mass energy $4.7 \ \rm GeV$. It is hopeful to provide a new perspective on the characteristics of the charmed baryon $\Lambda_c^+$.
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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