Speaker
Dr
Po-Yen Tseng
(NTHU)
Description
We perform global fits to the general two-Higgs doublet models (2HDMs) with generalized couplings using the most updated data from ATLAS, CMS, and Tevatron. We include both scenarios with CP-conserving and CP-violating couplings. By relaxing the requirement on the discrete symmetries that are often imposed on the Yukawa couplings in order to prohibit the tree-level flavour changing neutral current (FCNC), we try to see which of the 2HDMs is preferred.
Summary
We summarized our finding in this work as following:
- Higgcision in 2HDMs can be parameterised efficiently by using only 4 parameters including the contributions to the Higgs-two photons couplings from the charged Higgs.
- The chi-square values difference from the fitting among various types of 2HDM are very small.
- tan$\beta$ is constrained to be small.
- The $p$-value for various fits of 2HDMs are worse than that of the standard model (SM).
- Finally, we emphasis on that future precision measurements of the Higgs coupling to the scalar top-quark bilinear ($C^S_u$) and tan$\beta$ may endow us with the discriminating power among various types of 2HDMs especially when $C^S_u$ deviates from its SM value 1.
Primary authors
Prof.
Jae Sik Lee
(Chonnam National University)
Prof.
Kingman Cheung
(NTHU)
Co-author
Dr
Po-Yen Tseng
(NTHU)
