Next-to-leading-order electroweak correction to H → Z 0 γ
Year: 2024
Type: erratum
Abstract: Inspired by the recent observation of the Higgs boson radiative decay into Z 0 by and Collaborations, we investigate the next-to-leading-order (NLO) electroweak correction to this rare decay process in Standard Model (SM). Implementing the on shell renormalization scheme, we find that the magnitude of the NLO electroweak correction may reach 7% of the leading-order (LO) prediction, much more significant than that of the NLO QCD correction, which is merely about 0.3%. After incorporating the O ( α ) correction, the predicted partial width from various α schemes tend to converge to each other. Including both NLO electroweak and QCD corrections, the SM prediction for the branching fraction shifts from the LO value of ( 1.40 – 1.71 ) × 10 − 3 to ( 1.55 ± 0.06 ) × 10 − 3 , considerably lower than the measured value B exp [ H → Z 0 γ ] = ( 3.4 ± 1.1 ) × 10 − 3 . Resolving this discrepancy clearly calls for further theoretical investigations, and, more importantly, experimental efforts from and the prospective Higgs factories such as and . Published by the American Physical Society 2024
Authors: Wen-Long Sang, Feng Feng, Yu Jia
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4402901761