Constraining Gluonic Quartic Gauge Coupling Operators with $gg \to \gamma \gamma$
John Ellis, Shao-Feng Ge
TL;DR
This paper uses LHC data to set limits on dimension-8 gluonic operators affecting gluon-photon scattering, providing constraints on new physics models like Born-Infeld extensions.
Contribution
It presents the first experimental bounds on specific dimension-8 SMEFT operators using $gg o \gamma\gamma$ data from the LHC.
Findings
Lower limits on operator scales $M \\gtrsim 1$ TeV from current data.
Discussion of future collider sensitivities.
Highlights the potential of gluon-gluon to photon-photon scattering as a probe.
Abstract
Gluon-gluon to photon-photon scattering offers to the LHC experiments a uniquely powerful probe of dimension-8 operators in the Standard Model Effective Field Theory (SMEFT) that are quadratic in both the electromagnetic and gluonic field-strength tensors, such as would appear in the Born-Infeld extension of the Standard Model (SM). We use 13-TeV ATLAS data on the production of isolated photon pairs to set lower limits on the scales of dimension-8 operators ~TeV, and discuss the prospective sensitivities of possible future hadron colliders.
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