Multi-jet production in deep inelastic scattering with Pythia

IF 5.4 1区物理与天体物理 Q1 Physics and Astronomy

Journal of High Energy Physics Pub Date : 2025-05-16 DOI:10.1007/JHEP05(2025)153

Ilkka Helenius, Joni O. Laulainen, Christian T. Preuss

引用次数: 0

Abstract

We introduce multi-jet merging for deep inelastic scattering in the Vincia parton shower in the Monte Carlo event generator Pythia 8. Merging combines event samples of different parton multiplicities with logarithmically enhanced parton-shower radiation. We consider up to five outgoing partons using two different merging algorithms. We vary the relevant scale choices and compare to experimental data by the H1 collaboration at the HERA collider. Results show that multi-jet merging improves the description to data, especially for low virtuality events, and that jet cross-sections converge when the partonic multiplicity exceeds the number of reconstructed jets.

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深度非弹性散射中的多射流产生

在蒙特卡罗事件生成器Pythia 8中引入了多射流合并，用于Vincia parton shower的深度非弹性散射。合并将不同部分多重度的事件样本与对数增强的部分簇辐射结合在一起。我们使用两种不同的合并算法考虑最多五个外向部分。我们改变了相关的尺度选择，并与HERA对撞机H1合作的实验数据进行了比较。结果表明，多射流合并改进了对数据的描述，特别是对低虚拟度事件的描述，且当局部多重数超过重建射流数时，射流截面收敛。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of High Energy Physics 物理-物理：粒子与场物理

CiteScore

10.30

自引率

46.30%

发文量

2107

审稿时长

1.5 months

期刊介绍： The aim of the Journal of High Energy Physics (JHEP) is to ensure fast and efficient online publication tools to the scientific community, while keeping that community in charge of every aspect of the peer-review and publication process in order to ensure the highest quality standards in the journal. Consequently, the Advisory and Editorial Boards, composed of distinguished, active scientists in the field, jointly establish with the Scientific Director the journal''s scientific policy and ensure the scientific quality of accepted articles. JHEP presently encompasses the following areas of theoretical and experimental physics: Collider Physics Underground and Large Array Physics Quantum Field Theory Gauge Field Theories Symmetries String and Brane Theory General Relativity and Gravitation Supersymmetry Mathematical Methods of Physics Mostly Solvable Models Astroparticles Statistical Field Theories Mostly Weak Interactions Mostly Strong Interactions Quantum Field Theory (phenomenology) Strings and Branes Phenomenological Aspects of Supersymmetry Mostly Strong Interactions (phenomenology).