The Higgs -> b(b)over-bar, c(c)over-bar, gg measurement at CEPC
文献类型：期刊论文
| 作者 | Zhu, YF; Cui, HH; Ruan, MQ
|
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2022 |
| 期号 | 11页码:100 |
| 关键词 | e plus -e- Experiments Higgs Physics Jets |
| ISSN号 | 1029-8479 |
| DOI | 10.1007/JHEP11(2022)100 |
| 文献子类 | Article |
| 英文摘要 | Accurately measuring the properties of the Higgs boson is one of the core physics objectives of the Circular Electron Positron Collider (CEPC). As a Higgs factory, the CEPC is expected to operate at a centre-of-mass energy of 240 GeV, deliver an integrated luminosity of 5.6 ab(-1), and produce one million Higgs bosons according to the CEPC Conceptual Design Report (CDR). Combining measurements of the l(+)l(-) H, v (v) over barH, and q (q) over barH channels, we conclude that the signal strength of H -> b (b) over bar /c (c) over bar /gg can be measured with a relative accuracy (relative statistical uncertainty only) of 0.27%/4.03%/1.56%. Extrapolating to the recently released TDR operating parameters corresponding to the in- tegrated luminosity of 20 ab(-1), the relative accuracy of H -> b (b) over bar /c (c) over bar /gg signal strength is 0.14%/2.13%/0.82% (relative statistical uncertainty only). We analyze the dependence of the expected accuracies on the critical detector performances: Color Singlet Identification (CSI) for the q (q) over barH channel and flavor tagging for both v (v) over barH and q (q) over barH channels. Compared to the baseline CEPC detector performance, ideal flavor tagging can increase the H -> b (b) over bar /c (c) over bar /gg signal strength accuracy by 2%/63%/13% in the v (v) over barH channel and 35%/122%/181% in the q (q) over barH channel. A strong dependence between the CSI performance and anticipated accuracies in q (q) over barH channel is identified. The relevant systematic uncertainties are also discussed in this paper. |
| 语种 | 英语 |
| WOS记录号 | WOS:000885016800001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/299661]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 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 | Zhu, YF,Cui, HH,Ruan, MQ. The Higgs -> b(b)over-bar, c(c)over-bar, gg measurement at CEPC[J]. JOURNAL OF HIGH ENERGY PHYSICS,2022(11):100. |
| APA | Zhu, YF,Cui, HH,&Ruan, MQ.(2022).The Higgs -> b(b)over-bar, c(c)over-bar, gg measurement at CEPC.JOURNAL OF HIGH ENERGY PHYSICS(11),100. |
| MLA | Zhu, YF,et al."The Higgs -> b(b)over-bar, c(c)over-bar, gg measurement at CEPC".JOURNAL OF HIGH ENERGY PHYSICS .11(2022):100. |
入库方式： OAI收割
来源：高能物理研究所
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