Predictions of exclusive $\Upsilon$ photoproduction at the LHC and future colliders

TL;DR

This paper predicts the cross sections for exclusive $ ext{Upsilon}$ photoproduction at current and future colliders using gluon PDFs derived from $J/\psi$ data, incorporating NLO calculations and skewing effects.

Contribution

It introduces a method to predict $ ext{Upsilon}$ photoproduction cross sections using low $x$ gluon PDFs from $J/\psi$ data with NLO accuracy and skewing corrections.

Findings

Predictions cover a wide energy range for current and future colliders.

Incorporates next-to-leading order calculations and skewing corrections.

Uses gluon PDFs extracted from HERA and LHC data.

Abstract

The cross section for exclusive $\Upsilon$ ultraperipheral photoproduction at present and future colliders is determined using the low $x$ gluon PDF extracted from an analysis of exclusive $J/\psi$ measurements performed at HERA and the LHC. Predictions are given at next-to-leading order in collinear factorisation over a wide $\gamma p$ centre-of-mass energy range, calculated assuming the non-relativistic approximation for the $\Upsilon$ wave function, and with skewing corrections incorporated.