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arXiv 2007.15013hep-ph
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费米子算符对Higgs宽度测量的影响

Impact of fermionic operators on the Higgs width measurement

Eduardo da Silva Almeida, Oscar J. P. Éboli, M. C. Gonzalez-Garcia

摘要:

在没有超出标准模型贡献的情况下,LHC pp -> ZZ的离壳Higgs产生提供了目前最直接的Higgs宽度测量。在这里,我们分析了异常Z耦合费米子的希格斯宽度测定的影响。我们发现,尽管这些耦合受到现有的电弱精密数据的强烈约束,但它们可以显著影响LHC 102和103的希格斯宽度测定。相反,在较大的积分亮度运行中,例如在高光度大型强子对撞机和高能大型强子对撞机设置中预见的运行中,希格斯宽度测量中这种异常相互作用的影响很小。

英文摘要:

The off-shell Higgs production in pp -> ZZ at LHC provides at present the most direct measurement of the Higgs width in the absence of beyond the standard model contributions. Here, we analyze the impact of anomalous Z couplings to fermions on the Higgs width determination. We show that, despite these couplings being strongly constrained by the available electroweak precision data, they can substantially affect the Higgs width determination at the LHC Runs 2 and 3. Conversely, in larger integrated luminosities runs, such as those foreseen at the high luminosity LHC and high energy LHC setups, the effect of such anomalous interactions in the Higgs width measurement is minimal.

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