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arxiv: 2602.12344 · v2 · pith:7UNB6WNNnew · submitted 2026-02-12 · ✦ hep-ph

Precise QCD Predictions for Hadron-in-jet Production in e^+e^- Collisions

Leonardo Bonino , Aude Gehrmann-De Ridder , Thomas Gehrmann , Alexander Huss , Francesco Merlotti , Giovanni Stagnitto This is my paper
classification ✦ hep-ph
keywords jetsproductionmathrmpredictionsalephallowsannihilationclean
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The production of identified hadrons inside jets in $e^+ e^-$ annihilation allows for detailed studies of parton-to-hadron fragmentation functions in a clean environment. We compute hadron-in-jets production cross sections for $e^+e^- \to 2\,\mathrm{jets}$ and $e^+e^- \to 3\,\mathrm{jets}$ to next-to-next-to-leading order (NNLO) in perturbative QCD. By comparing with data from the ALEPH experiment, we demonstrate the implications of the newly computed theory predictions for precision phenomenology.

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