Production of Tensor Glueball in Ultraperipheral $pp$, $AuAu$ and $PbPb$ Collisions

TL;DR

This paper investigates the production of tensor glueballs in ultraperipheral collisions of protons and heavy ions, providing cross section predictions and estimating event rates for future collider experiments.

Contribution

It introduces a method to calculate tensor glueball production cross sections in UPCs using the EPA and predicts measurable event rates at future colliders.

Findings

Approximately 10 tensor glueball events expected in PbPb collisions at LHC.

Predicted rapidity distributions and total cross sections for UPCs.

Future HE-LHC and FCC experiments could significantly enhance tensor glueball detection.

Abstract

In this work, we discuss the production of a tensor glueball in the proton-proton and nuclei-nuclei ultraperipheral collisions (UPCs). The cross section is calculated in the equivalent photon approximation (EPA). The total UPCs cross section is related to the matrix elements of $\gamma \gamma\to \pi^0 G_2$ process, which can be described as in terms of neutral pion and tensor glueball $G_2$'s distribution amplitudes. The predictions for the rapidity distributions of UPCs cross sections and total cross sections are presented. The theoretical uncertainty of the whole calculation is considered. We consider the decay modes of the final-state tensor glueball and estimate the corresponding number of events. We estimate that there are about 10 tensor glueball $G_2\to\phi\phi$ signal events in $PbPb$ collisions at the LHC. We also argue that the lead-lead UPC experiments at future HE-LHC and FCC experiments will provide larger opportunities to measure tensor glueballs.