A comparative study of $T_{cc}$ versus $X(3872)$ production in $pp$ collisions at $\sqrt{s}=$ 7 TeV

TL;DR

This study compares the production mechanisms and spectra of exotic hadrons $T_{cc}$ and $X(3872)$ in proton-proton collisions at 7 TeV, using simulation models to distinguish their internal structures.

Contribution

It introduces a simulation-based comparison of $T_{cc}$ and $X(3872)$ production, highlighting differences in their transverse momentum spectra and emission source properties.

Findings

Significant discrepancy in transverse momentum spectra between compact and molecular states.

Production asymmetry observed between $T_{cc}^+$ and $T_{cc}^-$.

Coalescence parameters extracted to characterize emission source properties.

Abstract

The production of exotic hadrons $T_{cc}$ and $X(3872)$ in $pp$ collisions at $\sqrt{s}=7$ TeV is compared using the parton and hadron cascade model PACIAE together with the dynamically constrained phase-space coalescence model DCPC. In the simulation, the compact tetraquark state and the loose molecular state are formed in the partonic and hadronic levels, respectively. Our analysis of the transverse momentum spectra reveals a significant discrepancy between the compact state and the molecular states. Furthermore, the production asymmetry between $T_{cc}^+$ and $T_{cc}^-$ is investigated. Finally, the coalescence parameters are extracted from the calculated spectra to further characterize the emission source properties. These distributions are proposed as valuable criteria for distinguishing between these states and investigating their internal structures in experimental measurements.