Precise Predictions for Event Shapes in Diphoton Production at the LHC

TL;DR

This paper computes second-order QCD corrections to diphoton event shapes at the LHC, enhancing the precision of theoretical predictions crucial for Higgs and new physics analyses.

Contribution

It provides the first calculation of ${ m O}(\a_s^3)$ corrections to diphoton event shapes, improving the accuracy of theoretical models for LHC phenomenology.

Findings

Second-order QCD corrections significantly impact diphoton event shape predictions.

Enhanced agreement between theoretical predictions and experimental measurements.

Provides a foundation for more precise Higgs and new physics studies at the LHC.

Abstract

Photon pair production is an important benchmark process at the LHC, entering Higgs boson studies and new physics searches. It has been measured to high accuracy, allowing for detailed studies of event shapes in diphoton final states. To enable precision physics with diphoton event shapes, we compute the second-order QCD corrections, ${\cal O} (\alpha_s^3)$, to them and study their phenomenological impact.