Investigation of exotic state X(3872) in $pp$ collisions at $\sqrt{s}=$7 and 13 TeV

TL;DR

This study uses a coalescence model with PACIAE-generated data to predict production yields and distributions of the exotic state X(3872) in proton-proton collisions at 7 and 13 TeV, considering different structural hypotheses.

Contribution

It introduces a novel application of the coalescence model to predict the production and distribution of X(3872) with different structural assumptions in high-energy pp collisions.

Findings

Predicted yields for three X(3872) structures.

Distinct transverse momentum distributions for each structure.

Different rapidity distributions for the three structures.

Abstract

We have used the dynamically constrained phase space coalescence model to study the production of the exotic state $X(3872)$ based on the hadronic final states generated by the parton and hadron cascade model (PACIAE) with $|y|<1$ and $p_T < 15.5$ GeV/c in $pp$ collisions at $\sqrt{s}=7$ and 13 TeV, respectively. Here the $X(3872)$ is assumed to consist of bound state $D\bar {D^*}$, which can form three possible structures for the tetraquark state, the nucleus-like state, and the molecular state. The yields of three different structures $X(3872)$ were predicted. The transverse momentum distribution and the rapidity distribution of three different structures $X(3872)$ are also presented. Sizable difference can be found in the transverse momentum and rapidity distributions for the three different $X(3872)$ structures.