# Exclusive vector-toponium photoproduction in hadronic collisions

## TL;DR

This paper explores the potential for exclusive vector toponium production via photon-hadron interactions at high-energy colliders, providing theoretical predictions for cross sections and distributions, but noting experimental challenges.

## Contribution

It introduces a theoretical framework for predicting vector toponium production in hadronic collisions using $k_T$-factorization and various gluon distribution models.

## Key findings

- Predicted rapidity distributions and cross sections for vector toponium production.
- Production rates are very low, making experimental detection challenging.
- The study highlights the need for high luminosity to observe this process.

## Abstract

An exploratory study of the exclusive production of a vector - toponium $\psi_t$ state by photon - hadron interactions is performed considering proton - proton and proton - nucleus collisions at the Large Hadron Collider (LHC) and Future Circular Collider (FCC) energies. The scattering amplitude is calculated using the $k_T$ - factorization formalism assuming that the vector - toponium state can be described by a Gaussian light-cone wave function and considering different models for the unintegrated gluon distribution. Predictions for the rapidity distributions and total cross - sections are presented. Our results indicate that the experimental measurement of this final state will be very difficult for the expected integrated luminosities at the LHC and FCC.