The mass spectrum of Λc baryon family is investigated within the DN-D∗N coupled-channel framework using two phenomenological approaches for the low-energy D(∗)N interactions: the heavy quark effective theory and the flavor-symmetry-constrained effective Lagrangian method. It is shown that the LHCb pentaquark states have direct analogs in the Λc family. Specifically, Λc(2765), Λc(2910), and Λc(2940) mirror the patterns of Pccˉ(4312), Pccˉ(4440), and Pccˉ(4457), respectively. These mirror pentaquark modes offer valuable insights into the quantum numbers of the two heavy Pccˉ states, which remain experimentally undetermined. Further exploration of such correlations among exotic hadronic states across different flavor sectors will be crucial for developing a comprehensive theoretical understanding of the modern hadron spectrum.
@article{arxiv.2511.15649,
title = {Towards the LHCb pentaquark modes in the single-charm sector},
author = {Chao-Wei Shen and Yong-Hui Lin and Hao-Jie Jing},
journal= {arXiv preprint arXiv:2511.15649},
year = {2025}
}