Recoil-Safe Subtraction, Matching and Merging in $$e^+e^- \to$$ hadrons

Journal Article · Wed Jul 30 04:00:00 EDT 2025 · No journal information

DOI:https://doi.org/10.48550/arXiv.2507.22837· OSTI ID:2574344

Höche, Stefan ^[1]; Krauss, Frank ^[2]; Meinzinger, Peter ^[3]; Reichelt, Daniel ^[4]

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1. Fermilab
2. Durham U., IPPP
3. Zurich U.
4. CERN

We present the first next-to-leading order matched and multi-jet merged predictions based on the Alaric parton shower. The components needed for infrared subtraction in the S-MC@NLO algorithm are computed analytically for the case of color singlet decays to hadronic final states and validated against existing approaches for up to e+e- to 5 jets. Phenomenological results for e+e- to hadrons at the Z pole are obtained with up to five jets at next-to-leading order precision, for the first time using an evolution algorithm with NLL-preserving kinematics mapping.

• Research Organization: CERN; Durham U., IPPP; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Zurich U.
• Sponsoring Organization: US Department of Energy
• DOE Contract Number: 89243024CSC000002
• OSTI ID: 2574344
• Report Number(s): ZU-TH 49/25; CERN-TH-2025-141; IPPP-25-49; FERMILAB-PUB-25-0479-T; MCNET-25-18; arXiv:2507.22837; oai:inspirehep.net:2955526
• Journal Information: No journal information, Journal Name: No journal information
• Country of Publication: United States
• Language: English