MAcNLOPS for ZZ pair production at the LHC

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Publication Details

Journal
The European Physical Journal C
Published
2026-07-26
DOI
https://doi.org/10.1140/epjc/s10052-026-16152-7
Primary Topic
Particle physics theoretical and experimental studies
Type
article
Field-Weighted Citation Impact
0.00
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article

MAcNLOPS for ZZ pair production at the LHC

Rikkert Frederix, 车玉晓
The European Physical Journal C
Particle physics theoretical and experimental studies
article

MAcNLOPS for ZZ pair production at the LHC

Rikkert Frederix, 车玉晓
article en

Abstract

Abstract We present an implementation of the MAcNLOPS matching prescription for $$pp\rightarrow ZZ$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>p</mml:mi> <mml:mi>p</mml:mi> <mml:mo>→</mml:mo> <mml:mi>Z</mml:mi> <mml:mi>Z</mml:mi> </mml:mrow> </mml:math> production in a MadGraph5_aMC@NLO + Pythia8 setup. Starting from a standard MC@NLO event sample, negative $$\mathbb {H}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>H</mml:mi> </mml:math> events are removed and compensated by a veto applied to the first shower emission of the $$\mathbb {S}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>S</mml:mi> </mml:math> events. The implementation is validated against MC@NLO for radiation-sensitive and inclusive diboson observables. Agreement is found up to a rather small power-suppressed contribution affecting the very low- $$p_T$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>p</mml:mi> <mml:mi>T</mml:mi> </mml:msub> </mml:math> region. The method removes all negative $$\mathbb {H}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>H</mml:mi> </mml:math> weights with negligible additional computational cost, while negative $$\mathbb {S}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>S</mml:mi> </mml:math> weights are left unchanged, showing that MAcNLOPS is a promising alternative to MC@NLO with a reduced fraction of negative weights.

The European Physical Journal CVol. 86(7)
Lund University (SE)
Openalex Percentile: Top 11%
Particle physics theoretical and experimental studies
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