QCD corrections to triboson production

2007/03/31 by Achilleas Lazopoulos, Kirill Melnikov, Frank Petriello · 5 citations
Computer Science · Physics and Astronomy · #Algorithms and Data Compression #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph

paper · pdf · doi:10.1103/physrevd.76.014001

published as Phys.Rev.D76:014001,2007 · 15 pages, 3 figures; typos fixed, references and event listing added

arxiv created 2007/05/08 · openalex publication_date 2007/07/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present a computation of the next-to-leading order QCD corrections to the production of three Z bosons at the Large Hadron Collider. We calculate these corrections using a completely numerical method that combines sector decomposition to extract infrared singularities with contour deformation of the Feynman parameter integrals to avoid internal loop thresholds. The NLO QCD corrections to pp\ensuremath→ZZZ are approximately 50% and are badly underestimated by the leading order scale dependence. However, the kinematic dependence of the corrections is minimal in phase space regions accessible at leading order.

Citations

• Automatized analytic continuation of Mellin–Barnes integrals
• High-energy approximation of one-loop Feynman integrals

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