Gauge anomalies on shell and collinear factorization.
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| Title: | Gauge anomalies on shell and collinear factorization. |
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| Authors: | Alviani, Edoardo1 (AUTHOR) alviani@ijclab.in2p3.fr, Falkowski, Adam1 (AUTHOR) adam.falkowski@ijclab.in2p3.fr |
| Source: | European Physical Journal C -- Particles & Fields. May2026, Vol. 86 Issue 5, p1-10. 10p. |
| Subjects: | Factorization, Gauge invariance, Scattering amplitude (Physics), Gravitational interactions |
| 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. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| 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. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 14346044 |
| DOI: | 10.1140/epjc/s10052-026-15782-1 |
