2021/03/17 by Ryuta Kiuchi, Kiuchi, Ryuta, Yanxi Gu +13
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Neutrino Physics Research #Particle Detector Development and Performance #Particle physics theoretical and experimental studies
paper · pdf · doi:10.48550/arxiv.2103.09633
openalex publication_date 2021/03/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The precision of the yield measurement of the Higgs boson decaying into a pair of Z bosons process at the Circular Electron Positron Collider (CEPC) is evaluated. Including the recoil Z boson associated with the Higgs production (Higgsstrahlung) total three Z bosons are involved for this channel, from which final states characterized by the presence of a pair of leptons, quarks, and neutrinos are chosen for the signal. Two analysis approaches are compared and the final precision of σZH⋅BR(H → ZZ*) is estimated to be 7.9% using a multivariate analysis technique, based on boosted decision trees. The relative precision of the Higgs boson width, using this H → ZZ* decay topology, is estimated by combining the obtained result with the precision of the inclusive ZH cross section measurement.