Taming the Zoo of Tetraquarks and Pentaquarks using the HISH Model

TL;DR

This paper uses the holography inspired stringy hadron (HISH) model to systematically analyze and predict the properties of charmed tetraquarks and pentaquarks, including their trajectories and decay behaviors.

Contribution

It introduces a comprehensive holographic string model approach to classify and predict exotic hadron states, distinguishing genuine exotic hadrons from molecular states.

Findings

Predicted trajectories for 71 tetraquarks and 210 pentaquarks.

Most of the exotic states remain undiscovered.

Computed decay widths for selected exotic hadrons.

Abstract

In this paper we scan over all possible charmed tetraquarks and pentaquarks. Using the holography inspired stringy hadron (HISH) model we determine the trajectories associated with each of the exotic hadron candidates. The trajectories include further exotic states with higher angular momentum or higher stringy excited states. A trajectory is a property of a genuine exotic hadron and can be used to distinguish between the latter and a molecule. We examine 71 tetraquarks and 210 pentaquarks. Few of these states have already been found but most of the predicted zoo have yet not been discovered. We analyze the strong decay processes of these exotic hadrons and compute the corresponding decay widths of part of them.