One-loop off-shell decay H^* → ZZ at future colliders

2022/09/26 by Khiem Hong Phan, Phan, Khiem Hong, Dzung Tri Tran +2
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2209.12410

openalex publication_date 2022/09/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present one-loop formulas for contributing to the HZZ vertex in 't Hooft-Veltman gauge within Standard Model framework. One-loop off-shell Higgs decay rates to Z-pair are investigated in both unpolarized and longitudinal polarization for Z bosons in final state. The corrections are range of 7% to 8.4% when we vary the off-shell Higgs mass from 200 GeV to 500 GeV. In applications, we study off-shell Higgs decay H^* → ZZ in the Higgs productions at future colliders such as the signal processes γ^*(Q²)γ→ H^* → ZZ and e^-γ→ e^-H^* → e^- ZZ are analyzed.

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