2020/09/30 by CMS Collaboration, A. M. Sirunyan, A. Tumasyan +98 · 20 citations
Physics and Astronomy · #Boson #Branching fraction #Dark Matter and Cosmic Phenomena #Higgs boson #High-Energy Particle Collisions Research #Interacting boson model #Large Hadron Collider #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Scalar boson #Standard Model (mathematical formulation) #Vector boson #hep-ex
paper · pdf · doi:10.1007/jhep03(2021)011
published in Journal of High Energy Physics 2021(3) (Springer Nature) · Replaced with the published version. Added the journal reference and the DOI. All the figures and tables, including additional supplementary figures, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-20-005 (CMS Public Pages)
openalex publication_date 2021/03/01 · arxiv created 2021/03/11 · arxiv updated 2021/03/12 · openalex created_date 2021/09/13 · openalex updated_date 2026/08/06
A bstract A search is presented for a Higgs boson that is produced via vector boson fusion and that decays to an undetected particle and an isolated photon. The search is performed by the CMS collaboration at the LHC, using a data set corresponding to an integrated luminosity of 130 fb − 1 , recorded at a center-of-mass energy of 13 TeV in 2016–2018. No significant excess of events above the expectation from the standard model background is found. The results are interpreted in the context of a theoretical model in which the undetected particle is a massless dark photon. An upper limit is set on the product of the cross section for production via vector boson fusion and the branching fraction for such a Higgs boson decay, as a function of the Higgs boson mass. For a Higgs boson mass of 125 GeV, assuming the standard model production rates, the observed (expected) 95% confidence level upper limit on the branching fraction is 3.5 (2.8)%. This is the first search for such decays in the vector boson fusion channel. Combination with a previous search for Higgs bosons produced in association with a Z boson results in an observed (expected) upper limit on the branching fraction of 2.9 (2.1)% at 95% confidence level.