# Regge Trajectories of Exotic Hadrons in the Flux Tube Model

## TL;DR

This paper explores the non-linear Regge trajectories of exotic pentaquark hadrons within the flux tube model, highlighting deviations from linearity and incorporating relativistic effects to match experimental and lattice data.

## Contribution

It introduces a modified flux tube model accounting for finite quark masses and relativistic corrections to better describe pentaquark Regge trajectories.

## Key findings

- Non-linear Regge trajectories fit experimental data well.
- Relativistic corrections are essential for accurate modeling.
- Deviations from linearity are significant for pentaquark systems.

## Abstract

We have investigated the Regge trajectories of exotic hadrons by considering different possible pentaquark configurations with finite quark mass in the flux tube model. Signifi- cant deviation is observed in the linear behavior of the Regge trajectories for pentaquark systems in view of the universal value of the Regge slope parameter for hadrons. The modified Regge trajectories are also compared with the available experimental and lat- tice data. It is observed that the non-linear Regge trajectories of such pentaqurk systems can be well described by the relativistic corrections in view of the current quark masses and the high rotational speed of the quarks at the end of flux tube structure.