NLO QCD corrections to $J/\psi$ pair production in photon-photon collision

TL;DR

This paper calculates the NLO QCD corrections to $J/$ pair production in photon-photon collisions, providing more precise cross section predictions relevant for future collider experiments.

Contribution

It presents the first NLO QCD correction calculation for $$ pair production in photon-photon collisions within the NRQCD framework.

Findings

NLO corrections significantly increase the predicted cross sections.

The process is potentially observable at Belle II within the next decade.

Predictions are provided for multiple future collider facilities.

Abstract

We calculate the next-to-leading order (NLO) quantum chromodynamics (QCD) correction to the exclusive process $\gamma+\gamma\to J/\psi+J/\psi$ in the framework of non-relativistic QCD (NRQCD) factorization formalism. The cross sections at the SuperKEKB electron-positron collider, as well as at the future colliders, like the Circular Electron Positron Collider (CEPC) and the International Linear Collider (ILC), are evaluated. Numerical result indicates that the process will be hopefully to be seen by the Belle II detector within the next decade.