Antenna subtraction for processes with identified particles at hadron colliders

Bonino, Leonardo; Gehrmann, Thomas; Marcoli, Matteo; Schürmann, Robin; Stagnitto, Giovanni

Abstract

Collider processes with identified hadrons in the final state are widely studied in view of determining details of the proton structure and of understanding hadronization. Their theory description requires the introduction of fragmentation functions, which parametrise the transition of a produced parton into the identified hadron. To compute higher-order perturbative corrections to these processes requires a subtraction method for infrared singular configurations. We extend the antenna subtraction method to hadron fragmentation processes in hadronic collisions up to next-to-next-to-leading order (NNLO) in QCD by computing the required fragmentation antenna functions in initial-final kinematics. The integrated antenna functions retain their dependence on the momentum fractions of the incoming and fragmenting partons.

Citation

Bonino, L., Gehrmann, T., Marcoli, M., Schürmann, R., & Stagnitto, G. (2024). Antenna subtraction for processes with identified particles at hadron colliders. Journal of High Energy Physics, 2024(8), Article 73. https://doi.org/10.1007/jhep08%282024%29073

• Journal Article Type: Article
• Acceptance Date: Jul 31, 2024
• Online Publication Date: Aug 8, 2024
• Publication Date: 2024-08
• Deposit Date: Aug 16, 2024
• Publicly Available Date: Aug 16, 2024
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Electronic ISSN: 1029-8479
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2024
• Issue: 8
• Article Number: 73
• DOI: https://doi.org/10.1007/jhep08%282024%29073
• Keywords: Specific QCD Phenomenology, Jets and Jet Substructure, Higher-Order Perturbative Calculations
• Public URL: https://durham-repository.worktribe.com/output/2745874