Double Higgs boson production via vector boson fusion in SMEFT

IF 5.3 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2025-09-29 DOI:10.1103/bywd-2dy1

Athanasios Dedes, Janusz Rosiek, Michał Ryczkowski

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引用次数: 0

Abstract

While gluon fusion dominates Higgs pair production at the LHC, vector boson fusion (VBF) offers a unique window into beyond the Standard Model (BSM) physics through its distinctive kinematic features and direct sensitivity to Higgs-vector boson interactions. We perform a comprehensive analysis of double Higgs production via VBF in the Standard Model effective field theory (SMEFT), systematically investigating how dimension-6 and dimension-8 bosonic operators—particularly those involving field derivatives—can enhance the production rate. We identify the most relevant Wilson coefficients (WCs) affecting the trilinear Higgs coupling (hhh) and Higgs-vector boson interactions (hVV, hhVV). Using constraints from global fits and interpolating fit results for unconstrained WCs with naive dimensional analysis, we assess their effects on the VV→hh (V=W,Z) scattering amplitudes and cross sections. Our analysis includes a study of EFT convergence and validity in models with scalar extensions of the SM. Numerical simulations for the planned High-Luminosity LHC experiment (HL-LHC) in general reveal only a modest and challenging to detect enhancement of the VBF di-Higgs production rate over the SM prediction. However, we show that in optimistic scenarios, such a process could be observed at the HL-LHC. In certain cases, when the enhancement is dominated by the dimension-6 or dimension-8 operators containing field derivatives (and thus leading to stronger energy-dependent effects), this channel becomes competitive with di-Higgs production via gluon fusion. This work highlights the role of VBF di-Higgs production as a complementary channel for probing anomalous Higgs couplings and their impact on BSM physics.

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SMEFT中矢量玻色子聚变产生双希格斯玻色子

虽然在大型强子对撞机中胶子融合主导着希格斯对的产生，但矢量玻色子融合（VBF）通过其独特的运动特征和对希格斯-矢量玻色子相互作用的直接敏感性，为超越标准模型（BSM）物理学提供了一个独特的窗口。我们在标准模型有效场理论（SMEFT）中通过VBF对双希格斯产生进行了全面分析，系统地研究了6维和8维玻色子算子（特别是涉及场导数的玻色子算子）如何提高生产率。我们确定了影响三线性希格斯耦合（hhh）和希格斯-矢量玻色子相互作用（hVV, hhVV）的最相关的威尔逊系数（WCs）。利用无约束WCs的全局拟合和插值拟合结果的约束和朴素量纲分析，我们评估了它们对VV→hh （V=W，Z）散射振幅和截面的影响。我们的分析包括在SM的标量扩展模型中研究EFT的收敛性和有效性。计划中的高亮度LHC实验（HL-LHC）的数值模拟总体上显示，相较于SM预测，VBF双希格斯粒子产生率的提高只有适度的和具有挑战性的。然而，我们表明，在乐观的情况下，这样的过程可以在HL-LHC上观察到。在某些情况下，当增强由包含场导数的6维或8维算符主导时（从而导致更强的能量依赖效应），该通道与通过胶子聚变产生的双希格斯具有竞争力。这项工作强调了VBF双希格斯产生作为探测异常希格斯耦合及其对BSM物理影响的补充通道的作用。

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

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.