Gauge anomalies on shell and collinear factorization
Abstract
Abstract We revisit gauge anomalies from the purely on-shell perspective. We argue that violation of anomaly cancellation conditions manifests as a breakdown of collinear factorization. We explicitly construct one-loop 5-point amplitudes with graviton exchange displaying singular behavior in collinear limits that cannot be reconciled with factorization theorems. In this approach, gravity serves as a universal probe of both abelian and non-abelian anomalies.
Fields of Study & Subjects
Advanced Differential Geometry Research
Publication details
- Journal / source
- The European Physical Journal C
- Publisher
- Springer Science and Business Media LLC
- Volume
- 86
- Issue
- 5
- Publication date
- 25 May 2026
- Language
- EN