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In the framework of the modified chromo-magnetic interaction model, we perform a systematical study on the mass spectrums of the ground pentaquark states with $qqqqbar{Q}$, $qqqQbar{q}$, $QQQQbar{q}$, $QQQQbar{Q}$, and $QQQqbar{Q}$, $(Q=c,b; q=n,s; n=u,d)$ configurations. The isospin-color-spin wave functions satisfying Pauli principle for each type of ground pentaquark states are constructed. With the help of experimental data, we estimate their possible mass spectrums in two different schemes. Based on our results, we present a detailed analysis on the mass spectrums and decay behaviors for the discussed pentquark states. We hope that our study will be helpful to experimentally search for such types of the exotic pentaquark states in the future.
In the framework of the color-magnetic interaction model, we have systematically calculated the mass splittings for the S-wave triply heavy pentaquark states with the configuration $qqQQbar{Q}$ $(Q=c,b;q=u,d,s)$. Their masses are estimated and their
The past seventeen years have witnessed tremendous progress on the experimental and theoretical explorations of the multiquark states. The hidden-charm and hidden-bottom multiquark systems were reviewed extensively in [Phys. Rept. 639 (2016) 1-121].
Many charmonium-like and bottomonium-like $XYZ$ resonances have been observed by the Belle, Babar, CLEO and BESIII collaborations in the past decade. They are difficult to fit in the conventional quark model and thus are considered as candidates of e
In this short review we present and discuss all the experimental information about the charged exotic charmonium states, which have been observed over the last five years. We try to understand their properties such as masses and decay widths with QCD
Doubly heavy tetraquark $(QQbar qbar q)$ states are the prime candidates of tightly bound exotic systems and weakly decaying. In the framework of the improved chromomagnetic interaction (ICMI) model, we complete a systematic study on the mass spectra