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Hybrid kT-factorization and impact factors at NLO

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arxiv 2205.09585 v3 pith:U7YQ7ESA submitted 2022-05-19 hep-ph

Andreas van Hameren , Leszek Motyka , Grzegorz Ziarko This is my paper
classification hep-ph
keywords impactfactorsevolutionformulahybridkt-factorizationattributedcarries
verification ladder T0 review T1 audit T2 compute T3 formal
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In the hybrid kT-factorization formula, one initial-state parton momentum is space-like and carries non-vanishing transverse components, while the other is on-shell. We promote this factorization formula to next-to-leading order. Studying the partonic cross section, we identify all soft and collinear divergencies in the real and virtual contribution, and recognize that all non-cancelling ones can be attributed to PDF evolution, evolution kernel, and target impact factors. In result, we construct a framework that may be used to compute NLO impact factors in general. In particular, we recover known expressions for inclusive NLO quark-and gluon impact factor corrections.

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Cited by 1 Pith paper

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  1. High-energy dynamics of QCD: Theoretical and phenomenological results

    hep-ph 2025-06 conditional novelty 6.0 of 10

    Real NLO corrections to the BFKL Higgs impact factor are derived with a physical top-quark mass, and updated tetraquark fragmentation functions are applied to predict rates at 14 and 100 TeV.

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