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arXiv 1009.4497hep-ph
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LHC阈附近双希格斯粒子产生的隐藏扇形效应

Hidden sector effects on double higgs production near threshold at the LHC

A. C. A. Oliveira, R. Rosenfeld

摘要:

在这封信中,我们研究了一个新的效果的隐藏扇区耦合到标准模型希格斯玻色子:增强的希格斯对生产截面附近的阈值,由于束缚态效应。在计算了隐藏扇区对有效$ggHH$耦合的阶梯贡献后,我们得到了通过希格斯环的胶子-胶子散射的振幅。我们通过光学定理将这个振幅与双希格斯产生截面联系起来。我们发现,增强的数量级为100的阈值区域附近的部分截面可以得到一个隐藏的部门强耦合到希格斯玻色子。在LHC上相应的截面可以大到耦合极值的SM结果的10倍。检测这种效应原则上可以导致关于隐藏扇区的重要信息。

英文摘要:

In this letter we study a novel effect of a hidden sector coupling to the standard model Higgs boson: an enhancement of the Higgs pair production cross section near threshold due to bound state effects. After summing the ladder contributions of the hidden sector to the effective $ggHH$ coupling, we find the amplitude for gluon-gluon scattering via a Higgs loop. We relate this amplitude to the double Higgs production cross section via the optical theorem. We find that enhancements of the order of 100 for the partonic cross section near the threshold region can be obtained for a hidden sector strongly coupled to the Higgs boson. The corresponding cross section at the LHC can be as large as a factor of 10 times the SM result for extreme values of the coupling. The detection of such an effect could in principle lead to important information about the hidden sector.

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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