Dimension-six electroweak top-loop effects in Higgs production and decay
文献类型：期刊论文
| 作者 | Zhang, C; Vryonidou, E; Zhang C(张岑) |
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2018 |
| 期号 | 8页码:36 |
| 关键词 | Heavy Quark Physics Higgs Physics Effective Field Theories Beyond Standard Model |
| ISSN号 | 1029-8479 |
| DOI | 10.1007/JHEP08(2018)036 |
| 文献子类 | Article |
| 英文摘要 | We study the next-to-leading order electroweak corrections to Higgs processes from dimension-six top-quark operators in the Standard Model Effective Field Theory approach. We consider the major production channels, including WH, ZH, and VBF production at the LHC, and ZH, VBF production at future lepton colliders, as well as the major decay channels including H -> gamma gamma, gamma Z, Wl nu, Zll, b (b) over bar, mu mu, tau tau. The results show that within the current constraints, top-quark operators can shift the signal strength of the loop-induced processes, i.e. H -> gamma gamma, gamma Z, by factors of similar to O(1) - O(10), and that of the tree-level processes, i.e. all remaining production and decay channels, by similar to 5 - 10% at the LHC, and up to similar to 15% at future lepton colliders. This implies that essentially all Higgs channels have started to become sensitive to top-quark couplings, and in particular, Higgs observables at high luminosity LHC as well as future lepton colliders, even below the t (t) over bar threshold, will improve our knowledge of top-quark couplings. We derive the sensitivities of Higgs measurements to top-quark operators at the high luminosity LHC, using projections for both inclusive and differential measurements. We conclude that treating the dimension-six top-quark sector and the Higgs/electroweak sector separately may not continue to be a good strategy. A global analysis combining Higgs and top-quark measurements is desirable, and our calculation and implementation provide an automatic and realistic simulation tool for this purpose. |
| WOS关键词 | EFFECTIVE-FIELD THEORY ; AMPLITUDES ; LEVEL |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000441224900002 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286201]  |
| 专题 | 高能物理研究所_理论物理室 |
| 通讯作者 | Zhang C(张岑) |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Zhang, C,Vryonidou, E,Zhang C. Dimension-six electroweak top-loop effects in Higgs production and decay[J]. JOURNAL OF HIGH ENERGY PHYSICS,2018(8):36. |
| APA | Zhang, C,Vryonidou, E,&张岑.(2018).Dimension-six electroweak top-loop effects in Higgs production and decay.JOURNAL OF HIGH ENERGY PHYSICS(8),36. |
| MLA | Zhang, C,et al."Dimension-six electroweak top-loop effects in Higgs production and decay".JOURNAL OF HIGH ENERGY PHYSICS .8(2018):36. |
入库方式： OAI收割
来源：高能物理研究所
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