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PanScales showers for hadron collisions: all-order validation

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arxiv 2207.09467 v2 pith:SN4RNYGZ submitted 2022-07-19 hep-ph

PanScales showers for hadron collisions: all-order validation

Melissa van Beekveld , Silvia Ferrario Ravasio , Keith Hamilton , Gavin P. Salam , Alba Soto-Ontoso , Gregory Soyez , Rob Verheyen This is my paper
classification hep-ph
keywords showerscollisionstestscolour-singlethadronhadronicincludemomentum
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We carry out extensive tests of the next-to-leading logarithmic (NLL) accuracy of the PanScales parton showers, as introduced recently for colour-singlet production in hadron collisions. The tests include comparisons to (semi-)analytic NLL calculations of a wide range of hadron-collider observables: the colour-singlet boson transverse momentum distribution; global and non-global hadronic energy flow variables related to jet vetoes and analogues of jettiness distributions; (sub)jet multiplicities; and observables sensitive to the DGLAP evolution of the incoming momentum fractions. In the tests, we also include an implementation of a standard transverse-momentum ordered dipole shower, to establish the size of missing NLL effects in such showers, which, depending on the observable, can reach $100\%$. This paper, together with arXiv:2205.02237, constitutes the first step towards process-independent NLL-accurate parton showers for hadronic collisions.

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Forward citations

Cited by 3 Pith papers

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

  1. Logarithmically-accurate showers with massive quarks

    hep-ph 2026-05 unverdicted novelty 7.0

    PanScales final-state showers now include quark masses at NLL accuracy while keeping original accuracy for massless observables.

  2. Dissecting Parton Showers with Multi-Point Energy Correlators

    hep-ph 2026-07 accept novelty 6.0

    Projections of four-point energy correlators cleanly separate spin from kinematic azimuthal correlations inside jets; spin effects are subdominant in accessible LHC kinematics.

  3. Looking inside jets: an introduction to jet substructure and boosted-object phenomenology

    hep-ph 2019-01