We present analytic results for one-loop radiative corrections to off-shell decay H∗→W+W− in 't Hooft-Veltman gauge within Standard Model framework. In numerical results, we show off-shell decay rate and its corrections with varying off-shell Higgs mass. The results show that the corrections are of 10% contributions to total decay rates. Furthermore, we study the impacts of one-loop radiative corrections to off-shell decay H∗→W+W− in Higgs processes at future colliders. The signal processes such as e−e+→ZH∗→Z(WW) with including the initial beam polarizations and e−e+→νeνˉeH∗→νeνˉe(WW) and e−γ→e−H∗→e−WW are examined. We find that the effects are visible impacts and these should be taken into account at future colliders.
@article{arxiv.2305.04009,
title = {One-loop formulas for off-shell decay $H^* \rightarrow W^+W^-$ in 't Hooft-Veltman gauge and its applications},
author = {Khiem Hong Phan and Dzung Tri Tran and Anh Thu Nguyen},
journal= {arXiv preprint arXiv:2305.04009},
year = {2023}
}