English

Resonance in the $Y_{c}N$ potential model

Nuclear Theory 2018-10-03 v1

Abstract

We calculate two-body Jπ=0+,1+J^{\pi}=0^{+}, 1^{+}, and Jπ=2+J^{\pi}=2^{+} resonance states of YcY_{c} (=Λc= \Lambda_{c}, Σc\Sigma_{c}, or Σc\Sigma_{c}^{*}) and NN using the complex scaling method. We employ the YcNY_{c}N-CTNN potentials, which were proposed in our previous study, and obtain four resonances near ΣcN\Sigma_{c}N and ΣcN\Sigma_{c}^{*}N thresholds. From the analysis by the binding energies of partial channel systems, we conclude that these resonance states are Feshbach resonances. We compare the results with the YcNY_{c}N resonance states in the heavy quark limit, where the ΣcN\Sigma_{c}N and ΣcN\Sigma_{c}^{*}N thresholds are degenerate, and find that they form two pairs of the heavy-quark doublets in agreement with the heavy quark spin symmetry.

Cite

@article{arxiv.1803.11349,
  title  = {Resonance in the $Y_{c}N$ potential model},
  author = {Saori Maeda and Makoto Oka and Yan-Rui Liu},
  journal= {arXiv preprint arXiv:1803.11349},
  year   = {2018}
}
R2 v1 2026-06-23T01:09:31.714Z