Light S-wave pentaquarks on the light front
High Energy Physics - Phenomenology
2025-10-03 v1 Nuclear Theory
Abstract
We construct an explicit basis set for pentaquark states on a regular 4-simplex, that diagonalizes the Hamiltonian for light pentaquarks with confinement on the light front (LF). The ensuing eigenstates are free of the center of mass motion and satisfy exact Dirichlet boundary conditions. Hyperfine interactions in the form of color-spin or flavor-spin are shown to lift the degeneracy of the 16 pentastates, with a spectrum that compares fairly with some of the empirical nucleon excited states. The quark PDF for the light pentastates is discussed.
Cite
@article{arxiv.2510.02076,
title = {Light S-wave pentaquarks on the light front},
author = {Fangcheng He and Edward Shuryak and Wan Wu and Ismail Zahed},
journal= {arXiv preprint arXiv:2510.02076},
year = {2025}
}
Comments
14 pages, 4 figures