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Triple collinear splitting functions at NLO for scattering processes with photons

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arxiv 1408.4821 v2 pith:LSYJ7ACM submitted 2014-08-20 hep-ph hep-th

German F. R. Sborlini , Daniel de Florian , German Rodrigo This is my paper
classification hep-phhep-th
keywords processesresultssplittingcollinearfunctionstripleableamplitudes
verification ladder T0 review T1 audit T2 compute T3 formal
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We present splitting functions in the triple collinear limit at next-to-leading order. The computation was performed in the context of massless QCD+QED, considering only processes which include at least one photon. Through the comparison of the IR divergent structure of splitting amplitudes with the expected known behavior, we were able to check our results. Besides that we implemented some consistency checks based on symmetry arguments and cross-checked the results among them. Studying photon-started processes, we obtained very compact results.

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  1. Infrared singularities and the collinear limits of multi-leg scattering amplitudes

    hep-ph 2025-07 conditional novelty 6.0 of 10

    Using colour conservation and rescaling symmetry, the two-particle collinear constraints are shown to imply multi-particle collinear factorisation through four loops, and a new triple-collinear constraint is derived f...

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