# Production of $W^+ W^-$ and $t \bar t$ pairs via photon-photon processes in proton-proton collisions

## TL;DR

This paper reviews recent theoretical results on the production of $W^+ W^-$ and $t \bar t$ pairs via photon-photon fusion in proton-proton collisions, including photon transverse momenta and proton structure functions.

## Contribution

It introduces a method incorporating photon transverse momenta and compares different proton structure function parametrizations for photon flux calculations.

## Key findings

- Calculated total and differential cross sections for $W^+ W^-$ production.
- Analyzed inelastic photon fluxes using various proton structure functions.
- Discussed rapidity gap survival probabilities in the context of proton fragmentation.

## Abstract

We review our recent results for production of $W^+ W^-$ and $t {\bar t}$ pairs via photon-photon fusion. A theoretical approach is presented in short. We include transverse momenta of photons when calculating fluxes of photons. Then we discuss our results for cross section (total and differential) for $W^+ W^-$ production. Results for different parametrizations of proton structure functions are used to calculate inelastic fluxes of photons. A discussion on rapidity gap survival probability due to remnant fragmentation is presented. A similar discussion is presented for $t {\bar t}$ production.