English

Spontaneous CP-violation in the Simplest Little Higgs Model

High Energy Physics - Phenomenology 2019-08-20 v2

Abstract

We proposed how spontaneous CP-violation can be generated in the simplest little Higgs model in this talk. Comparing with the original paper, both formalism and phenomenology are updated. The model is still alive facing the collider and electric dipole moment (EDM) measurements. Strictest constraint comes from LHC ZZ' direct search, which leads to f8 TeVf\gtrsim8~\textrm{TeV}. Higgs measurements also set strict constraint on the scalar mixing angle, if the Higgs rare decay channel is open. EDM measurements still set weak constraints for this model, even after the recent ACME updated measurement on electron's EDM. In this talk, we also discussed the test of CP-violation in the scalar sector, through the interactions between scalars and gauge bosons.

Keywords

Cite

@article{arxiv.1810.03854,
  title  = {Spontaneous CP-violation in the Simplest Little Higgs Model},
  author = {Ying-nan Mao},
  journal= {arXiv preprint arXiv:1810.03854},
  year   = {2019}
}

Comments

Talk given at The 39th International Conference on High Energy Physics (ICHEP2018, July 4-11, Seoul, Korea); 4 pages; references and abstract updated; submitted version to PoS