Predictions of exclusive ϒ photoproduction at the LHC and future colliders

C A Flett,T Teubner,M G Ryskin,S P Jones,A D Martin

doi:10.1103/physrevd.105.034008

Abstract

The cross section for exclusive $\mathrm{\ensuremath{\Upsilon}}$ ultraperipheral photoproduction at present and future colliders is determined using the low $x$ gluon parton distribution function extracted from an analysis of exclusive $J/\ensuremath{\psi}$ measurements performed at the Hadron-Electron Ring Accelerator and the Large Hadron Collider. Predictions are given at next-to-leading order in collinear factorization over a wide $\ensuremath{\gamma}p$ centre-of-mass energy range, calculated assuming the nonrelativistic approximation for the $\mathrm{\ensuremath{\Upsilon}}$ wave function, and with skewing corrections incorporated.

Highlights

The exclusive Υ photoproduction process, γp → Υp, was first measured in diffractive deep-inelastic-scattering events by the ZEUS collaboration at the ep Hadron
A subsequent measurement of this observable came from H1 Collaboration at the start of the new millennium [2] and later again from ZEUS [3], extending the kinematic coverage of the datasets to larger values of the γp centre-of-mass energy
Measurements of exclusive Υ production have been made by the LHCb collaboration in upltrffiaffi peripheral pp collisions at pp centre-of-mass energies s 1⁄4 7 and 8 TeV [4] and in the last few years, by the CMS collaboration in the ppPffisffibffiNffiffiNffimffi 1⁄4od5e.0w2itThecVentr[e5-]o. f-Fmoarstshceonmerignyg per nucleon pair measurements of at

Summary

Predictions of exclusive Υ photoproduction at the LHC and future colliders

The exclusive Υ photoproduction process, γp → Υp, was first measured in diffractive deep-inelastic-scattering events by the ZEUS collaboration at the ep Hadron-. A subsequent measurement of this observable came from H1 Collaboration at the start of the new millennium [2] and later again from ZEUS [3], extending the kinematic coverage of the datasets to larger values of the γp centre-of-mass energy. Measurements of exclusive Υ production have been made by the LHCb collaboration in upltrffiaffi peripheral pp collisions at pp centre-of-mass energies s 1⁄4 7 and 8 TeV [4] and in the last few years, by the CMS collaboration in the ppPffisffibffiNffiffiNffimffi 1⁄4od5e.0w2itThecVentr[e5-]o.

In this short paper we make predictions for the exclusive

Published by the American Physical Society

LHCb Measurements