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A new approach to QCD final-state evolution in processes with massive partons

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arxiv 2307.00728 v2 pith:D5QCROYD submitted 2023-07-03 hep-ph

classification hep-ph
keywords algorithmevolutionmassivepartonprocessesradiationsoft-gluonsplitting
verification ladder T0 review T1 audit T2 compute T3 formal

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We present an algorithm for massive parton evolution which is based on the differentially accurate simulation of soft-gluon radiation by means of a non-trivial azimuthal angle dependence of the splitting functions. The kinematics mapping is chosen such as to to reflect the symmetry of the final state in soft-gluon radiation and collinear splitting processes. We compute the counterterms needed for a fully differential NLO matching and discuss the analytic structure of the parton shower in the NLL limit. We implement the new algorithm in the numerical code Alaric and present a first comparison to experimental data.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Timelike showers with jet recoils

    hep-ph 2025-12 conditional novelty 6.0 of 10

    A 'jet recoil' scheme assigning momentum-balance recoil to clusters of partons chosen by angular ordering brings kt-ordered dipole parton showers to next-to-leading-logarithmic accuracy, shown by fixed-order and resum...

  2. Recoil-Safe Subtraction, Matching and Merging in e+e- to hadrons

    hep-ph 2025-07 conditional novelty 6.0 of 10

    The Alaric shower is matched to NLO matrix elements and merged to five jets in e+e- to hadrons, with new analytic subtraction terms validated against Catani-Seymour subtraction.

  3. Parton spin correlations and $\mathcal{CP}$ properties in Higgs boson decay at future lepton colliders

    hep-ph 2026-01 conditional novelty 5.0 of 10

    In H→gg at a 240 GeV e+e− collider, the four-point energy-energy correlator with energy weight n=4 gives the strongest sensitivity to gluon spin correlations and, assuming perfect splitting-mode identification in the ...

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