# Heavy pentaquark spectroscopy in the diquark model

## TL;DR

This paper models heavy pentaquarks as diquark-antiquark systems using a potential approach combining QCD-inspired interactions and spin effects, aiming to explain observed LHCb states.

## Contribution

It introduces a potential model for heavy pentaquarks based on diquark constituents and includes novel calculations for states observed at LHCb.

## Key findings

- Predicted masses of various pentaquark states.
- Provided a theoretical framework consistent with experimental observations.
- Extended the model to different quark compositions.

## Abstract

$QQ^\prime qq\bar q$ 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 $P_c(4457)^+$.