We present a lattice QCD study of hidden-charm hexaquarks with quark content uscdˉsˉcˉ based on four ensembles of gauge configurations generated by CLQCD Collaboration with pion mass in the range of 220-300MeV. Four operators with quantum numbers 0++,0−+,1++ and 1−− respectively are constructed to interpolate the hexaquarks. After validating the spectrum and the dispersion relation for ordinary hadrons, we calculate the masses of the hexaquarks and extrapolate the results to the physical pion mass and the continuum limit. We find that the masses of the four hexaquarks are all below the ΞcΞˉc threshold, while the 0−+ hexaquark lies around the ηcK+K− threshold. These results will be helpful for experimental searches in future and for a deep understanding of the nature of multiquark states.
@article{arxiv.2207.00183,
title = {Hidden-charm Hexaquarks from Lattice QCD},
author = {Hang Liu and Jinchen He and Liuming Liu and Peng Sun and Wei Wang and Yi-Bo Yang and Qi-An Zhang},
journal= {arXiv preprint arXiv:2207.00183},
year = {2023}
}