Spontaneous CP-violation in the Simplest Little Higgs Model

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 $Z^{\prime }$ direct search, which leads to $f\gtrsim 8\text{TeV}$. 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.

arXiv commentTalk 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

References in corpus (13)

• An Improved Experimental Limit on the Electric Dipole Moment of the Neutron
• The Littlest Higgs
• A Revised Experimental Upper Limit on the Electric Dipole Moment of the Neutron
• The Little Higgs from a Simple Group
• The Simplest Little Higgs
• Smoking-gun signatures of little Higgs models
• Implications for New Physics from Fine-Tuning Arguments: II. Little Higgs Models
• Little Higgs Model Completed with a Chiral Fermionic Sector
• Testing CP-Violation in the Scalar Sector at Future $e^{+}{e}^{-}$ Colliders
• Spontaneous CP-violation in the Simplest Little Higgs Model and its Future Collider Tests: the Scalar Sector
• On the $ZH\eta$ vertex in the simplest Little Higgs Model
• Phenomenology of A Little Higgs Pseudo-Axion
• Simplest Little Higgs Revisited: Hidden Mass Relation, Unitarity and Naturalness

Cited by in corpus (1)

• Two-Higgs-Doublet Model with Soft CP-violation Confronting Electric Dipole Moments and Colliders