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arXiv 1409.8074hep-phhep-ex
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Di-Higgs现象学:被遗忘的通道

Di-Higgs phenomenology: The forgotten channel

Christoph Englert, Frank Krauss, Michael Spannowsky, Jennifer Thompson

摘要:

多希格斯最终状态的约束允许限制SM(或其扩展)的参数,直接涉及到电弱对称性破缺的机制。然而,多希格斯粒子产生的截面很小,而且在LHC运行2的繁忙的多喷流强子对撞机环境中,从现象学上可以获得的最终态是具有挑战性的。这使得扩大潜在可观察生产机制清单的必要性显而易见。大多数的唯象分析在过去都集中在$gg\to hh+jets$,在本文中,我们研究$pp\to t\bar t hh$在大型强子对撞机运行2,并发现这个通道$h\to b\bar b$和半轻子和强子顶部衰变有可能提供一个额外的处理,以限制希格斯三线性耦合在一个全球性的适合在运行2结束。

英文摘要:

Searches for multi-Higgs final states allow to constrain parameters of the SM (or extensions thereof) that directly relate to the mechanism of electroweak symmetry breaking. Multi-Higgs production cross sections, however, are small and the phenomenologically accessible final states are challenging to isolate in the busy multi-jet hadron collider environment of the LHC run 2. This makes the necessity to extend the list of potentially observable production mechanisms obvious. Most of the phenomenological analyses in the past have focused on $gg\to hh+jets$; in this paper we study $pp\to t\bar t hh$ at LHC run 2 and find that this channel for $h\to b\bar b$ and semi-leptonic and hadronic top decays has the potential to provide an additional handle to constrain the Higgs trilinear coupling in a global fit at the end of run 2.

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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