Automated next-to-leading order QCD and electroweak predictions of photon-photon processes in ultraperipheral collisions

Abstract

We present automated next-to-leading order QCD and/or electroweak (EW) predictions for photon-photon processes in ultraperipheral high-energy collisions of protons and ions, extending the capabilities of the MadGraph5_aMC@NLO framework together in combination with the gamma-UPC code. Key aspects of this extension are discussed. We compute QCD and/or EW quantum corrections for several phenomenologically interesting processes at LHC and FCC-hh energies.

arXiv comment35 pages, 4 figures, 11 tables; v2: journal version (minor corrections wrt v1)

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• Polarized tau decay and CP violation in ultraperipheral heavy-ion collisions
• NNLO QCD corrections to $\gamma \gamma \to Q\bar{Q}$ from Local Unitarity combined with Coulomb resummation and NLO EW effects