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Article
Report number arXiv:2306.07413 ; CERN-EP-2023-107
Title Search for dark photons in rare Z boson decays with the ATLAS detector
Related titleSearch for Dark Photons in Rare Z Boson Decays with the ATLAS Detector
Author(s) ATLAS Collaboration  Show all 2973 authors
Corporate Author(s) ATLAS Collaboration
Publication 2023-12-18
Imprint 13 Jun 2023
Number of pages 23
Note 33 pages in total, author list starting page 16, 6 figures, 1 table, submitted to Phys. Rev. Lett. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HDBS-2019-32/
In: Phys. Rev. Lett. 131 (2023) 251801
DOI 10.1103/PhysRevLett.131.251801 (publication)
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords exotics ; particle and resonance production ; experimental results ; Dark Photon Search ; Rare Z decays
Abstract A search for events with a dark photon produced in association with a dark Higgs boson via rare decays of the Standard Model Z boson is presented, using 139 fb1 of s=13 TeV proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider. The dark Higgs boson decays into a pair of dark photons, and at least two of the three dark photons must each decay into a pair of electrons or muons, resulting in at least two same-flavor opposite-charge lepton pairs in the final state. The data are found to be consistent with the background prediction, and upper limits are set on the dark photon's coupling to the dark Higgs boson times the kinetic mixing between the Standard Model photon and the dark photon, αDε2, in the dark photon mass range of [5,40] GeV except for the Υ mass window [8.8,11.1] GeV. This search explores new parameter space not previously excluded by other experiments.
Related document supersedes: ATLAS-CONF-2023-016
Copyright/License Preprint: © 2023-2025 CERN (License: CC-BY-4.0)
Publication: © 2023-2025 CERN (License: CC BY 4.0), sponsored by SCOAP³



Corresponding record in: Inspire
Email contact: tatjana.lenz@cern.ch


 Record created 2023-06-13, last modified 2024-12-25


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