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arXiv 1507.05028hep-phhep-ex
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希格斯对双玻色子超数的解释综述

Survey of Higgs interpretations of the diboson excesses

Yuji Omura, Kazuhiro Tobe, Koji Tsumura

摘要:

我们调查的diboson信号在标准模型(SM)与扩展的希格斯扇区,在大型强子对撞机的diboson通道的过剩的动机。我们从弱规范玻色子散射的么正性和规则开始,假设希格斯扇区是扩展的。根据求和规则,我们讨论了Higgs对双玻色子信号的解释及其与ATLAS双玻色子反常和其他实验条件的一致性。作为一个具体的例子,我们提出了一个两个Higgs偶重态模型,其中一个额外的CP偶标量与上型夸克的Yukawa耦合相对较大。diboson(WW和ZZ)信号可以用2 TeV CP偶Higgs玻色子来解释,而额外二重态中的CP奇Higgs玻色子和带电希格斯玻色子玻色子则受到LHC直接搜索和通过味观测量间接搜索的严格限制。特别地,为了避免在Vh通道中的双玻色子共振搜索,需要对模型进行进一步扩展。在我们的框架中,迪玻色子过量与SM希格斯信号相关,因此SM希格斯玻色子的精确测量对于测试希格斯解释也很重要。

英文摘要:

We investigate diboson signals in the Standard Model (SM) with an extended Higgs sector, motivated by the excesses in the diboson channels at the LHC. We begin with the unitarity sum-rules of the weak gauge boson scattering assuming the Higgs sector is extended. According to the sum-rules, we discuss the Higgs interpretations of the diboson signals and the consistency with the ATLAS diboson anomaly and other experimental constraints. As a concrete example, we propose a two-Higgs-doublet model where the Yukawa coupling of an extra CP-even scalar with up-type quark is relatively large. The diboson (WW and ZZ) signals can be explained by 2 TeV CP-even Higgs boson, while the partners, the CP-odd and the charged Higgs bosons in the extra doublet, are severely constrained by both the LHC direct search and the indirect search via flavor observables. Especially, in order to avoid the diboson resonance search in the Vh channel, further extensions of the model are required. The diboson excess is correlated with the SM Higgs signals in our framework, so that the precise measurement of the SM Higgs boson is also important to test the Higgs interpretation.

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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