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Charmed baryon pair production in proton-antiproton collisions in effective Lagrangian and Regge approaches

Dec 18, 2020
13 pages
Published in:
  • Eur.Phys.J.A 58 (2022) 2, 32
  • Published: Feb 18, 2022
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Abstract: (Springer)
Strange and charmed baryon pair productions in proton-antiproton collisions are studied in the effective Lagrangian and Regge approaches. Unknown parameters of both models are determined from the comparison with the existing data for strangeness productions. Then, we predict charm production cross sections by extrapolating the amplitudes for strangeness productions to those for charm. As a result, the total cross sections are about 10−410^{-4} to 10−510^{-5} times smaller than those of strangeness productions, depending on the final states. By using the known total cross sections for strangeness, \sim 10^{2} \upmu \mathrm{b} for ΛΛˉ\varLambda {\bar{\varLambda }} and, \sim 10^{1} \upmu \mathrm{b} for ΣΛˉ\varSigma {\bar{\varLambda }}, the total cross sections for charm productions are predicted to be \sim 10^{-2} \upmu \mathrm{b} for ΛcΛˉc\varLambda _{c} {\bar{\varLambda }}_c, \sim 10^{-3} \upmu \mathrm{b} for ΣcΛˉc\varSigma _{c} {\bar{\varLambda }}_c, and \sim 10^{-4} \upmu \mathrm{b} for ΣcΣˉc\varSigma _{c} {\bar{\varSigma }}_c. Our results can be tested in the future experiments at Pˉ\bar{\text {P}}ANDA.
  • strangeness: production
  • charmed baryon: production
  • charm: production
  • anti-p p: scattering
  • total cross section
  • effective Lagrangian
  • Regge
  • form factor
  • diffraction
  • SU(3)
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