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<p>We present the first next-to-leading order matched and multi-jet merged predictions based on the A<span>laric</span> parton shower. The components needed for infrared subtraction in the S-M<span>c</span>@N<span>lo</span> algorithm are computed analytically for the case of color singlet decays to hadronic final states and validated against existing approaches for up to <i>e</i><sup>−</sup><i>e</i><sup>+</sup> → 5 jets. Phenomenological results for <i>e</i><sup>−</sup><i>e</i><sup>+</sup> → hadrons at the <i>Z</i> 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.</p>

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Recoil-safe subtraction, matching and merging in e+e− → hadrons

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月19日

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  • Stefan Höche,
  • Frank Krauss,
  • Peter Meinzinger,
  • Daniel Reichelt

摘要

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+ → 5 jets. Phenomenological results for e−e+ → 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.