A New Paradigm: Role of Electron-positron and Hadron Colliders

TL;DR

This paper proposes a new paradigm linking the lightness of the Higgs boson to CP-violation, emphasizing the importance of combined collider experiments to understand electroweak symmetry breaking and CP violation.

Contribution

It introduces a novel perspective that focuses on heavier scalar bosons and advocates for a combined collider approach to explore beyond Standard Model physics.

Findings

Correlation between H(125) lightness and CP-violation

Heavier scalar bosons are key to understanding new physics

Necessity of multiple collider types for comprehensive analysis

Abstract

In 2012, a light scalar boson (denoted as H(125) in this paper) was discovered at the LHC. We explore the possible correlation between the lightness of H(125) and the smallness of CP-violation based on the Lee model, namely the spontaneous CP-violation two-Higgs-doublet-model. It is a new way to understand why H(125) is light. Based on this we propose that it is the much heavier scalar bosons, instead of the H(125), which need to be understood. This opens a new paradigm that one tries to understand the electro-weak symmetry breaking and CP violation. For the new paradigm, similar to many other physics beyond the standard model, one need both electron-positron and higher energy hadron collider, as well as the low energy experiments, in order to pin down the whole picture.