Search for Higgs boson production in association with a high-energy photon via vector-boson fusion with decay into bottom quark pairs at p s = 13 TeV with the ATLAS detector

• Main Author: Fiolhais, M. C. N.
• Publication Date: 2021
• Other Authors: Gonçalo, R., Veloso, F., Wolters, H., ATLAS Collaboration
• Format: Article
• Language: eng
• Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
• Download full: https://hdl.handle.net/10316/104999; https://doi.org/10.1007/JHEP03(2021)268
• topic: Hadron-Hadron scattering (experiments); Higgs physics

A search is presented for the production of the Standard Model Higgs boson in association with a high-energy photon. With a focus on the vector-boson fusion process and the dominant Higgs boson decay into b-quark pairs, the search bene ts from a large reduction of multijet background compared to more inclusive searches. Results are reported from the analysis of 132 fb1 of pp collision data at p s = 13TeV collected with the ATLAS detector at the LHC. The measured Higgs boson signal yield in this nal-state signature is 1:3 1:0 times the Standard Model prediction. The observed signi cance of the Higgs boson signal above the background is 1:3 standard deviations, compared to an expected signi cance of 1:0 standard deviations.