# Learning from Higgs physics at future Higgs factories

## Abstract

Future Higgs factories can reach impressive precision on Higgs property measurements. In this paper, instead of conventional focus of Higgs precision in certain interaction bases, we explored its sensitivity to new physics models at the electron-positron colliders. In particular, we studied two categories of new physics models, Standard Model (SM) with a real scalar singlet extension, and Two Higgs Double Model (2HDM) as examples of weakly-interacting models, Minimal Composite Higgs Model (MCHM) and three typical patterns of the more general operator counting for strong interacting models as examples of strong dynamics. We performed a global fit to various Higgs search channels to obtain the 95% C.L. constraints on the model parameter space. In the SM with a singlet extension, we obtained the limits on the singlet-doublet mixing angle sin(theta), as well as the more general Wilson coefficients of the induced higher dimensional operators. In the 2HDM, we analyzed tree level effects in tan(beta) vs. cos(beta-alpha) plane, as well as the one-loop contributions from the heavy Higgs bosons in the alignment limit to obtain the constraints on heavy Higgs masses for different types of 2HDM. In strong dynamics models, we obtained lower limits on the strong dynamics scale. In addition, oncemore »

- Authors:

- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Chinese Academy of Sciences (CAS), Beijing (China)
- Univ. of Jinan, Shandong (China); Univ. of Arizona, Tucson, AZ (United States)
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Chinese Academy of Sciences (CAS), Beijing (China)
- Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China)

- Publication Date:

- Research Org.:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

- OSTI Identifier:
- 1415645

- Report Number(s):
- FERMILAB-PUB-17-348-T; DESY-17-130; arXiv:1709.06103

Journal ID: ISSN 1029-8479; 1624427; TRN: US1800846

- Grant/Contract Number:
- AC02-07CH11359

- Resource Type:
- Journal Article: Accepted Manuscript

- Journal Name:
- Journal of High Energy Physics (Online)

- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2017; Journal Issue: 12; Journal ID: ISSN 1029-8479

- Publisher:
- Springer Berlin

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Phenomenology of Field Theories in Higher Dimensions; Supersymmetry Phenomenology

### Citation Formats

```
Gu, Jiayin, Li, Honglei, Liu, Zhen, Su, Shufang, and Su, Wei.
```*Learning from Higgs physics at future Higgs factories*. United States: N. p., 2017.
Web. doi:10.1007/JHEP12(2017)153.

```
Gu, Jiayin, Li, Honglei, Liu, Zhen, Su, Shufang, & Su, Wei.
```*Learning from Higgs physics at future Higgs factories*. United States. doi:10.1007/JHEP12(2017)153.

```
Gu, Jiayin, Li, Honglei, Liu, Zhen, Su, Shufang, and Su, Wei. Fri .
"Learning from Higgs physics at future Higgs factories". United States.
doi:10.1007/JHEP12(2017)153. https://www.osti.gov/servlets/purl/1415645.
```

```
@article{osti_1415645,
```

title = {Learning from Higgs physics at future Higgs factories},

author = {Gu, Jiayin and Li, Honglei and Liu, Zhen and Su, Shufang and Su, Wei},

abstractNote = {Future Higgs factories can reach impressive precision on Higgs property measurements. In this paper, instead of conventional focus of Higgs precision in certain interaction bases, we explored its sensitivity to new physics models at the electron-positron colliders. In particular, we studied two categories of new physics models, Standard Model (SM) with a real scalar singlet extension, and Two Higgs Double Model (2HDM) as examples of weakly-interacting models, Minimal Composite Higgs Model (MCHM) and three typical patterns of the more general operator counting for strong interacting models as examples of strong dynamics. We performed a global fit to various Higgs search channels to obtain the 95% C.L. constraints on the model parameter space. In the SM with a singlet extension, we obtained the limits on the singlet-doublet mixing angle sin(theta), as well as the more general Wilson coefficients of the induced higher dimensional operators. In the 2HDM, we analyzed tree level effects in tan(beta) vs. cos(beta-alpha) plane, as well as the one-loop contributions from the heavy Higgs bosons in the alignment limit to obtain the constraints on heavy Higgs masses for different types of 2HDM. In strong dynamics models, we obtained lower limits on the strong dynamics scale. In addition, once deviations of Higgs couplings are observed, they can be used to distinguish different models. Here, we also compared the sensitivity of various future Higgs factories, namely Circular Electron Positron Collider (CEPC), Future Circular Collider (FCC)-ee and International Linear Collider (ILC).},

doi = {10.1007/JHEP12(2017)153},

journal = {Journal of High Energy Physics (Online)},

number = 12,

volume = 2017,

place = {United States},

year = {Fri Dec 29 00:00:00 EST 2017},

month = {Fri Dec 29 00:00:00 EST 2017}

}

*Citation information provided by*

Web of Science

Web of Science