The effective theory for single Higgs and double Higgs production

Authors

Long-Bin Chen

• Guangzhou University
• chenlb_AT_gzhu_dot_edu_dot_cn

Hai Tao Li

• LANL
• haitaoli_AT_lanl_dot_gov

Hua-Sheng Shao

• LPTHE
• huashengshao_AT_lpthe_dot_jussieu_dot_fr

Jian Wang

• Shandong University
• j_dot_wang_AT_sdu_dot_edu_dot_cn

References

• L.-B. Chen, H. T. Li, H.-S. Shao and J. Wang, ​arXiv:1909.06808, ​arXiv:1912.13001.

Description of the model

In the infinite top-quark mass limit, the Higgs field can be effectively coupled with the gluon field via two operators

$\mathcal{L}_{\rm eff}=-\frac{1}{4}(C_h \frac{h}{v}-C_{hh}\frac{h^2}{2v^2})G^a_{\mu\nu}G^{a~\mu\nu}$

where

$G^a_{\mu\nu}$

is the gluon field strength tensor.

The NLO UFO model based on

$\mathcal{L}_{\rm eff}+\mathcal{L}_{\rm SM}$

can be downloaded from here.