Investigations on the low-lying $cccq\bar{q}$ resonances in a constituent quark model

Abstract

In present work, mass spectrum of the low-lying $cccq\bar{q}$ pentaquarks states with $q\bar{q}=u\bar{u}$, $d\bar{d}$ and $s\bar{s}$, are investigated employing a constituent quark model, within which the spin-dependent hyperfine interactions are taken to be the instanton-induced interaction and the one-gluon-exchange interaction, respectively. The model parameters are fixed by fitting the mass spectrum of the relative $q\bar{q}$ and $qqq$ traditional hadrons. The numerical results show that energies for all the obtained states in the two employed models are higher than corresponding meson-baryon channels, consequently, we roughly estimate strong decays of these states using a simple quark rearrangement model, the corresponding partial width ratios for different decay channels are presented.