English

Basis light-front quantization approach to $\Lambda$ and $\Lambda_c$ and their isospin triplet baryons

High Energy Physics - Phenomenology 2025-10-30 v2

Abstract

We obtain the masses, the electromagnetic properties, and the parton distribution functions (PDFs) of Λ\Lambda, Λc\Lambda_c, and their isospin triplet baryons, i.e, Σ0\Sigma^0, Σ+\Sigma^+, Σ\Sigma^- and Σc0\Sigma_c^0, Σc+\Sigma_c^+, Σc++\Sigma_c^{++} from a light-front effective Hamiltonian in the leading Fock sector in the basis light-front quantization framework. The light-front wave functions of these baryons are given by the eigenstates of the effective Hamiltonian consisting of a three-dimensional confinement potential and a one-gluon exchange interaction with fixed coupling. The masses of these baryons in our approach are in the experimental range while isospin-dependent mass differences are too small. Meanwhile, the electromagnetic properties are in agreement with the available experimental data, the lattice QCD simulations, and the other theoretical calculations. We also present the gluon and the sea quark PDFs, which we generate dynamically from the QCD evolution of the valence quark distributions.

Keywords

Cite

@article{arxiv.2208.00355,
  title  = {Basis light-front quantization approach to $\Lambda$ and $\Lambda_c$ and their isospin triplet baryons},
  author = {Tiancai Peng and Zhimin Zhu and Siqi Xu and Xiang Liu and Chandan Mondal and Xingbo Zhao and James P. Vary},
  journal= {arXiv preprint arXiv:2208.00355},
  year   = {2025}
}

Comments

19 pages, 16 figures

R2 v1 2026-06-25T01:21:26.509Z