| Testing cp violation in the scalar sector at future e(+)e(-) colliders | |
| Li, Gang3,4; Mao, Ying-nan1,2; Zhang, Chen3,4; Zhu, Shou-hua3,4,5,6 | |
| 刊名 | Physical review d
 |
| 2017-02-15 | |
| 卷号 | 95期号:3页码:8 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/physrevd.95.035015 |
| 通讯作者 | Li, gang(gangli@pku.edu.cn) ; Mao, ying-nan(maoyn@ihep.ac.cn) ; Zhang, chen(larry@pku.edu.cn) ; Zhu, shou-hua(shzhu@pku.edu.cn) |
| 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. |
| WOS关键词 | HIGGS-BOSON ; ILC ; DECAYS ; MODEL ; MSSM ; LHC |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000393944900006 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2176732 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Li, Gang; Mao, Ying-nan; Zhang, Chen; Zhu, Shou-hua |
| 作者单位 | 1.Chinese Acad Sci, Ctr Future High Energy Phys, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Div Theoret Phys, Beijing 100049, Peoples R China 3.Peking Univ, Inst Theoret Phys, Beijing 100871, Peoples R China 4.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China 5.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China 6.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Gang,Mao, Ying-nan,Zhang, Chen,et al. Testing cp violation in the scalar sector at future e(+)e(-) colliders[J]. Physical review d,2017,95(3):8. |
| APA | Li, Gang,Mao, Ying-nan,Zhang, Chen,&Zhu, Shou-hua.(2017).Testing cp violation in the scalar sector at future e(+)e(-) colliders.Physical review d,95(3),8. |
| MLA | Li, Gang,et al."Testing cp violation in the scalar sector at future e(+)e(-) colliders".Physical review d 95.3(2017):8. |
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