Work

Complete two-loop unrenormalized electroweak corrections to e + e − → H Z

Year: 2026

Type: article

Abstract: We compute the complete two-loop unrenormalized electroweak corrections to the Higgsstrahlung process e + e − → H Z at future Higgs factories. Our result for a given center-of-mass energy is expressed as a piecewise function defined by several deeply expanded power series, which has high precision and can be further manipulated efficiently. We find that the finite part of the unrenormalized two-loop electroweak corrections can contribute a few thousandths, which might indicate their importance to match the precision of future Higgs factories. This work represents the first complete calculation of the unrenormalized two-loop electroweak corrections for processes with four external particles.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/5ssz-gr6j

Authors: Xiang Chen, Xin Guan, Chuan-Qi He, Zhao Li, Xiao Liu, Yan-Qing Ma

Institutions: Peking University, South China Normal University, Institute of High Energy Physics, University of Chinese Academy of Sciences

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: hybrid