Testing CP violation in the scalar sector at future e(+)e(-) colliders
文献类型：期刊论文
| 作者 | Mao, YN; Zhu, SH ; Mao YN(毛英男); Zhang, C; Li, G
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2017 |
| 卷号 | 95期号:3页码:35015 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.95.035015 |
| 文献子类 | Article |
| 英文摘要 | We propose a model-independent method to test CP violation in the scalar sector through measuring the inclusive cross sections of e(+)e(-). -> Zh(1), Zh(2), h(1) h(2) processes with the recoil mass technique, where h(1), h(2) stand for the 125 GeV standard model-like Higgs boson and a new lighter scalar, respectively. This method effectively measures a quantity K proportional to the product of the three couplings of h(1) ZZ, h(2) ZZ, h(1) h(2)Z vertices. The value of K encodes a part of information about CP violation in the scalar sector. We simulate the signal and backgrounds for the processes mentioned above with m(2) = 40 GeV at the Circular Electron-Positron Collider (CEPC) with the integrated luminosity 5 ab(-1). We find that the discovery of both Zh(2) and h(1) h(2) processes at 5 sigma level indicates an O(10(-2)) K value that can be measured to 16% precision. The method is applied to the weakly coupled Lee model in which CP violation can be tested either before or after utilizing a "p(T) balance" cut (see Sec. II B for the definition). Lastly we point out that K not equal 0 is a sufficient but not a necessary condition for the existence of CP violation in the scalar sector, namely, K = 0 does not imply CP conservation in the scalar sector. |
| 电子版国际标准刊号 | 2470-0029 |
| WOS关键词 | HIGGS-BOSON ; ILC ; DECAYS ; MODEL ; MSSM ; LHC |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000393944900006 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284392]  |
| 专题 | 高能物理研究所_理论物理室 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 | Mao, YN,Zhu, SH,Mao YN,et al. Testing CP violation in the scalar sector at future e(+)e(-) colliders[J]. PHYSICAL REVIEW D,2017,95(3):35015. |
| APA | Mao, YN,Zhu, SH,毛英男,Zhang, C,&Li, G.(2017).Testing CP violation in the scalar sector at future e(+)e(-) colliders.PHYSICAL REVIEW D,95(3),35015. |
| MLA | Mao, YN,et al."Testing CP violation in the scalar sector at future e(+)e(-) colliders".PHYSICAL REVIEW D 95.3(2017):35015. |
入库方式： OAI收割
来源：高能物理研究所
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