Future prospects for stau in Higgs coupling to di-photon
Future prospects for stau in Higgs coupling to di-photon
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DOI：
10.1007/jhep04(2014)139
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发表时间：
2014-01
影响因子：
5.4
通讯作者：
Motoi Endo;T. Kitahara;Takahiro Yoshinaga
中科院分区：
文献类型：
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作者：
Motoi Endo;T. Kitahara;Takahiro Yoshinaga
我们还研究了对Higgs耦合到双光子有贡献的态的未来前景。这种耦合对新物理学很敏感，计划在未来的对撞机中以百分比水平进行测量。我们表明，如果过量的耦合被测量为大于4%，最轻的stau被预测为轻于约200 GeV，考虑到真空亚稳条件。这样的一个状态可以在ILC中找到。此外，我们展示了如何准确的STAU贡献的耦合可以重建的信息，可在ILC。我们还认为，即使在ILC的早期阶段最重的Stau还没有被发现，如果测量Stau混合角，那么通过测量Higgs耦合可以预测最重的Stau的质量。
We study future prospects of the stau which contributes to the Higgs coupling to di-photon. The coupling is sensitive to new physics and planned to be measured at percent levels in future colliders. We show that, if the excess of the coupling is measured to be larger than 4%, the lightest stau is predicted to be lighter than about 200 GeV by taking vacuum meta-stability conditions into account. Such a stau can be discovered at ILC. Moreover, we show how accurately the stau contribution to the coupling can be reconstructed from the information that is available at ILC. We also argue that, if the stau mixing angle is measured, the mass of the heaviest stau can be predicted by measuring the Higgs coupling, even when the heaviest stau is not yet discovered at the early stage of ILC.