Probing the Higgs boson through Yukawa force
Abstract
The ATLAS and CMS collaborations of the LHC have observed that the Higgs boson decays into the bottom quark-antiquark pair, and have also established that the Higgs coupling with the top quark-antiquark pair is instrumental in one of the modes for Higgs production. This underlines the discovery of the Yukawa force at the LHC. We demonstrate the impact of this discovery on the Higgs properties that are related to the dynamics of electroweak symmetry breaking. We show that these measurements have considerably squeezed the allowed window for new physics contributing to the Higgs couplings with the weak gauge bosons and the third generation quarks. The expected constraints at the HL-LHC and future Higgs factories are also shown. We project these constraints on the parameter space of a few motivated scenarios beyond the Standard Model. We pick them under two broad categories, namely, the composite Higgs and its RS dual, as well as various types of multi-Higgs models. The latter category includes models with singlet scalars, Type I, II and BGL-type two-Higgs doublet models, and models with scalar triplets à la Georgi and Machacek.
- Publication:
-
Nuclear Physics B
- Pub Date:
- December 2020
- DOI:
- 10.1016/j.nuclphysb.2020.115261
- arXiv:
- arXiv:2006.01164
- Bibcode:
- 2020NuPhB.96115261B
- Keywords:
-
- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment
- E-Print:
- 19 pages, 4 captioned figures. v3: New analysis on the reach of ILC, CEPC and FCC-ee included, new Appendix collating the data used in the analysis added, References updated, matches version published in Nucl. Phys. B