Test of Little Higgs Mechanism at Future Colliders
Shigeki Matsumoto
TL;DR
This paper evaluates how future electron-positron colliders can test the Little Higgs mechanism by measuring top partner couplings, focusing on the top sector and effective Lagrangian methods.
Contribution
It proposes a method to test the Little Higgs mechanism at future colliders by analyzing top partner production and Yukawa couplings.
Findings
Higgs associated and threshold productions are optimal for testing
Top partner Yukawa coupling measurement is crucial
Future colliders can effectively test the mechanism
Abstract
In the little higgs scenario, several coupling constants are related to each other to guarantee the stability of the higgs boson mass at one-loop level. This relation is called the little higgs mechanism. We discuss how accurately the relation can be tested at future colliders, with especially focusing on the top sector of the scenario using a method of effective lagrangian. In order to test the mechanism, it is important to measure the Yukawa coupling of the top partner. Higgs associated and threshold productions of the top partner are found to be the best processes for this purpose.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Particle Accelerators and Free-Electron Lasers · Superconducting Materials and Applications