Heavy pentaquark spectroscopy in the diquark model

Abstract

$Q{Q}^{\prime }qq\bar{q}$ pentaquarks are studied in a potential model, under the hypothesis that they are composite objects of two diquarks and one antiquark. The interaction between two colored objects includes two contributions, one based on the $q\bar{q}$ potential in QCD, computed in the gauge/string duality approach, and another describing the spin-spin interaction. The model has been extended to investigate pentaquarks with different quark content, as $Qqqq\bar{q}$ and $Qqqq\bar{Q}$, the latter including the states observed by LHCb, $P_c(4380{)}^{+}$ and $P_c(4450{)}^{+}$, later updated, with a new data sample, to $P_c(4312{)}^{+}$, $P_c(4440{)}^{+}$, and $P_c(4457{)}^{+}$.

Matches published version

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Cited by in corpus (4)

• Pentaquark and Tetraquark states
• Structure and decays of hidden heavy pentaquarks
• $QQ\bar{s}\bar{s}$ tetraquarks in the chiral quark model
• Flavor Exotic Triply-Heavy Tetraquark States in AdS/QCD Potential