English

Near-threshold resonance in $e^{+}e^{-}\rightarrow\Lambda_{c}\bar{\Lambda}_{c}$ process

High Energy Physics - Phenomenology 2023-11-21 v1 High Energy Physics - Experiment Nuclear Theory

Abstract

We discuss the influence of various contributions of the ΛcΛˉc\Lambda_{c}\bar{\Lambda}_{c} potential on the energy dependence of the cross section e+eΛcΛˉce^{+}e^{-}\rightarrow\Lambda_{c}\bar{\Lambda}_{c} near the threshold. New BESIII experimental data on the cross section and electromagnetic form factors GEG_{E} and GMG_{M} are taken into account. Our predictions are in good agreement with experimental data. We predict a bound state of ΛcΛˉc\Lambda_{c}\bar{\Lambda}_{c} at energy 38 MeV\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.

Keywords

Cite

@article{arxiv.2309.17018,
  title  = {Near-threshold resonance in $e^{+}e^{-}\rightarrow\Lambda_{c}\bar{\Lambda}_{c}$ process},
  author = {S. G. Salnikov and A. I. Milstein},
  journal= {arXiv preprint arXiv:2309.17018},
  year   = {2023}
}

Comments

5 pages, 1 figure