Fully heavy pentaquarks in quark models

Abstract

The fully heavy pentaquarks $cccc\bar{c}$ and $bbbb\bar{b}$ are systematically investigated within the chiral quark model and quark delocalization color screening model. The results are consistent in both two moelds, and the effect of the channel-coupling is crucial for forming a bound state of the fully heavy pentaquark system. Three possible fully heavy pentaquarks are obtained, which are the $cccc\bar{c}$ state with $J^P=1/2^{-}$ and the mass of $7891.9\sim 7892.7$ MeV, the $bbbb\bar{b}$ state with $J^P=1/2^{-}$ and the mass of $23810.1\sim 23813.8$ MeV, and the $bbbb\bar{b}$ state with $J^P=3/2^{-}$ and the mass of $23748.2\sim 23752.3$ MeV. All these fully heavy pentaquark states are worth searching in future experiments.

8 pages, 7 figures. arXiv admin note: text overlap with arXiv:2006.13745

References in corpus (10)

• Pentaquark and Tetraquark states
• Observation of a narrow pentaquark state, $P_c(4312{)}^{+}$, and of two-peak structure of the $P_c(4450{)}^{+}$
• Nuclear Force from Lattice QCD
• Constituent quark model study of the meson spectra
• Charmed bottom baryon spectroscopy from lattice QCD
• Quark-model study of few-baryon systems
• Nonrelativistic model of tetraquarks and predictions for their masses from fits to charmed and bottom meson data
• An alternative approach to the $\sigma$-meson-exchange in nucleon-nucleon interaction
• Fully heavy pentaquarks
• Prediction of $N\Omega$-like dibaryons with heavy quarks

Cited by in corpus (3)

• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• Fully-charm and -bottom pentaquarks in a Lattice-QCD inspired quark model
• Investigation of a candidate spin-$\frac{1}{2}$ hidden-charm triple strange pentaquark state $P_{csss}$