Low-energy e + e − → γ γ at NNLO in QED

Puntos clave

• The calculation improves precision for electron-positron collision processes, which is crucial for accurate physical predictions.
• Next-to-next-to-leading order results enhance luminosity measurement capabilities at colliders with energies up to a few GeV.
• Differential computations enable wider applications in particle physics, particularly at electron-positron colliders.
• Implemented in McMule, this work completes the NNLO efforts for essential 2 → 2 scattering processes.

Resumen