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arXiv 1503.08307hep-ph
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新物理学与希格斯工厂的希格斯光子相关生产

New Physics Searches with Higgs-photon associated production at the Higgs Factory

Hong-Yu Ren

摘要:

希格斯工厂是为了精确测量希格斯粒子和寻找新物理而设计的。本文提出$e^+e^- \to γh$过程是新物理学的一个有用的通道,它通常用有效场论独立地表示。我们分别用标准模型和有效场论方法计算了截面,发现$γh$的新物理效应只有两个自由度,比Higgsstrahlung过程少得多。这一点可以用来减少Wilson系数的退化。我们还首次计算了Higgs工厂中$γh$的2个$σ$边界,并证明了$γh$对某些6维算符比现有的实验数据更敏感.在乐观的情况下,在CEPC或FCC-ee运行的头几年后,可能会在CEPC或FCC-ee中观察到新的物理效应。

英文摘要:

The Higgs factory is designed for precise measurement of Higgs characters and search for new physics. In this paper we propose that $e^+e^- \to γh$ process could be a useful channel for new physics, which is normally expressed model independently by effective field theory. We calculate the cross section in both the Standard Model and effective field theory approach, and find that the new physics effects of $γh$ have only two degrees of freedom, much fewer than the Higgsstrahlung process. This point could be used to reduce the degeneracies of Wilson coefficients. We also calculated for the first time the 2$σ$ bounds of $γh$ at the Higgs factory, and prove that $γh$ is more sensitive to some dimension-6 operators than the current experimental data. In the optimistic scenario new physics effects may be observed at the CEPC or FCC-ee after the first couple of years of their run.

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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