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arXiv 2602.16288hep-phhep-ex
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标准模型有效场论是否足以描述希格斯对产生?

Is the Standard Model Effective Field Theory Enough for Higgs Pair Production?

Universitat de Barcelona(巴塞罗那大学);Istituto Nazionale di Fisica Nucleare, Sezione di Padova(意大利国家核物理研究所帕多瓦分部);Università di Padova(帕多瓦大学);Istituto Nazionale di Fisica Nucleare, Sezione di Perugia(意大利国家核物理研究所佩鲁贾分部);Università di Perugia(佩鲁贾大学)

Íñigo Asiáin, Ramona Gröber, Lorenzo Tiberi

AI总结:

研究通过比较SMEFT和HEFT对希格斯对产生截面的预测,探讨在不同紫外场景下哪种有效场论更适用,并发现HEFT在部分参数空间中更精确。

摘要:

我们研究了在标准模型有效场论(SMEFT)到六维以及在希格斯有效场论(HEFT)中主导阶展开的希格斯玻色子对产生。我们评估了在具体紫外场景中哪种描述是合适的。受“Loryon”启发模型的启发,我们将完整模型预测的希格斯对产生截面与SMEFT和HEFT的对应项进行比较。我们确定了两种EFT在哪些情况下提供相似的描述,并澄清了其耦合系数匹配所需的限制。我们还发现,在某些模型的部分参数空间中,HEFT可以比SMEFT更准确地重现希格斯对产生,突显双希格斯测量作为非线性电弱动力学探测的潜力。

英文摘要:

We study Higgs-boson pair production in the Standard Model Effective Field Theory (SMEFT) up to dimension six and in the Higgs Effective Field Theory (HEFT) at leading order in the effective theory expansion, and assess which description is appropriate in concrete UV scenarios. Motivated by "Loryon"-inspired models, we compare the Higgs pair production cross sections predicted by the full models to their SMEFT and HEFT counterparts. We identify regimes in which the two EFTs provide comparable descriptions, and clarify the limits required for their couplings to match. We also find that, for parts of parameter space in some of these models, HEFT can reproduce Higgs pair production more accurately than SMEFT, highlighting di-Higgs measurements as a potential probe of non-linear electroweak dynamics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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