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arXiv · 2507.22837

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

Stefan Höche·Frank Krauss·Peter Meinzinger·Daniel Reichelt
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Abstract

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.

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Stefan Höche, Frank Krauss, Peter Meinzinger, Daniel Reichelt. 2025-07-30. Recoil-Safe Subtraction, Matching and Merging in e+e- to hadrons. https://arxiv.org/abs/2507.22837

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