probingtopquarkcouplingsindirectlyathiggsfactories
文献类型：期刊论文
| 作者 | Durieux Gauthier1; Gu Jiayin2; Vryonidou Eleni3; Zhang Cen4 |
| 刊名 | chinesephysicsc
 |
| 出版日期 | 2018 |
| 卷号 | 042期号:012页码:123107 |
| ISSN号 | 1674-1137 |
| 英文摘要 | We perform a global effective-field-theory analysis to assess the combined precision of Higgs couplings, triple gauge-boson couplings, and top-quark couplings, at future circular e＋e- colliders, with a focus on runs below the tt-production threshold. Deviations in the top-quark sector entering as one-loop corrections are consistently taken into account in the Higgs and diboson processes. We find that future lepton colliders running at center-of-mass energies below the tt production threshold can still provide useful information on top-quark couplings, by measuring virtual top-quark effects. With rate and differential measurements, the indirect individual sensitivity achievable is better than at the high-luminosity LHC. However, strong correlations between the extracted top-quark and Higgs couplings are also present and lead to much weaker global constraints on top-quark couplings. This implies that a direct probe of top-quark couplings above the t~ production threshold is also helpful for the determination of Higgs and triple-gauge-boson couplings. In addition, we find that below the e＋e- -＋tth production threshold, the top-quark Yukawa coupling can be determined by its loop corrections to all Higgs production and decay channels. Degeneracy with the ggh coupling can be resolved, and even a global limit is competitive with the prospects of a linear collider above the threshold. This provides an additional means of determining the top-quark Yukawa coupling indirectly at lepton colliders. |
| 语种 | 英语 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/86244]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 作者单位 | 1.DESY Notkestra?e 85 2.PRISMA Cluster of Excellence, Institut fur Physik, Johannes Gutenberg-Universitat 3.中国科学院地理科学与资源研究所 4.中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Durieux Gauthier,Gu Jiayin,Vryonidou Eleni,et al. probingtopquarkcouplingsindirectlyathiggsfactories[J]. chinesephysicsc,2018,042(012):123107. |
| APA | Durieux Gauthier,Gu Jiayin,Vryonidou Eleni,&Zhang Cen.(2018).probingtopquarkcouplingsindirectlyathiggsfactories.chinesephysicsc,042(012),123107. |
| MLA | Durieux Gauthier,et al."probingtopquarkcouplingsindirectlyathiggsfactories".chinesephysicsc 042.012(2018):123107. |
入库方式： OAI收割
来源：地理科学与资源研究所
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