Work

Top-quark Yukawa coupling with a dimension-6 operator

Year: 2024

Type: article

Abstract: \nWe extend the standard top-quark Yukawa coupling with a dimension-6 operator in order to accommodate a CP violating complex phase with manifest gauge invariance. This leads to a new ttHH contact interaction, along with many Goldstone boson couplings. We investigate the impact of the new interactions on a muon collider process µ−µ+ → νµῡµtt¯H compared with the standard dimension-4 top-Yukawa coupling. The unitarity bounds on the coefficient of the new physics operator is obtained from WL−W+L and HH initiated processes.

Source: Springer Link (Chiba Institute of Technology)

DOI: 10.1051/epjconf/202431501027/pdf

Author: Ya-Juan Zheng

Institution: Iwate University

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Japan Society for the Promotion of Science

Awards: CP violation in the top Higgs sector, G8401296521