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Dario Kermanschah

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Preprint Oct 2026

Automated two-loop fermion-bubble contributions at high multiplicity

We compute the gauge-invariant, helicity-summed two-loop $N_f$ contribution for $q\bar q\to n\gamma^{(*)}$, $n=2,\ldots,8$. Local ultraviolet renormalisation, infrared factorisation, analytic loop-energy integration and a new automated threshold subtraction yield finite integrals over real spatial momenta. Adaptive mul...

Dario Kermanschah · 0 citations

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