Searches for exclusive Higgs and $Z$ boson decays into a vector quarkonium state and a photon using $139$ fb${}^{-1}$ of ATLAS $\sqrt{s}=13$ TeV proton$-$proton collision data

Abstract

Searches for the exclusive decays of Higgs and $Z$ bosons into a vector quarkonium state and a photon are performed in the ${\mu }^{+}{\mu }^{-}\gamma$ final state with a proton$-$proton collision data sample corresponding to an integrated luminosity of $139$ fb${}^{-1}$ collected at $\sqrt{s}=13$ TeV with the ATLAS detector at the CERN Large Hadron Collider. The observed data are compatible with the expected backgrounds. The 95% confidence-level upper limits on the branching fractions of the Higgs boson decays into $J/\psi \gamma$, $\psi (2S)\gamma$, and ${\rm Y}(1S,2S,3S)\gamma$ are found to be $2.0\times 10^{-4}$, $10.5\times 10^{-4}$, and $(2.5,4.2,3.4)\times 10^{-4}$, respectively, assuming Standard Model production of the Higgs boson. The corresponding 95% CL upper limits on the branching fractions of the $Z$ boson decays are $1.2\times 10^{-6}$, $2.4\times 10^{-6}$, and $(1.1,1.3,2.4)\times 10^{-6}$. An observed 95% CL interval of $(-133,175)$ is obtained for the ${\kappa }_c/{\kappa }_{\gamma }$ ratio of Higgs boson coupling modifiers, and a 95% CL interval of $(-37,40)$ is obtained for ${\kappa }_b/{\kappa }_{\gamma }$.

arXiv comment47 pages in total, author list starting page 30, 7 figures, 6 tables, published as Eur. Phys. J. C 83 (2023) 781. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HDBS-2018-53

References in corpus (84)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• A Large Mass Hierarchy from a Small Extra Dimension
• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• A Brief Introduction to PYTHIA 8.1
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• Asymptotic formulae for likelihood-based tests of new physics
• A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX
• A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• Event generation with SHERPA 1.1
• Parton distributions with LHC data
• The ATLAS Simulation Infrastructure
• Minimal Flavour Violation: an effective field theory approach
• Performance of the ATLAS Trigger System in 2015
• Higgs boson gluon-fusion production in N3LO QCD
• Muon reconstruction performance of the ATLAS detector in proton--proton collision data at $\sqrt{s}$=13 TeV
• Production and Integration of the ATLAS Insertable B-Layer
• Kernel Estimation in High-Energy Physics
• Electron and photon performance measurements with the ATLAS detector using the 2015-2017 LHC proton-proton collision data
• Combined measurements of Higgs boson production and decay using up to $80$ fb${}^{-1}$ of proton-proton collision data at $\sqrt{s}=$ 13 TeV collected with the ATLAS experiment
• NLO Electroweak Corrections to Higgs Boson Production at Hadron Colliders
• NNLO QCD corrections to the Higgs-strahlung processes at hadron colliders
• Combined measurements of Higgs boson couplings in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Luminosity determination in pp collisions at $\sqrt{s}$ = 8 TeV using the ATLAS detector at the LHC
• A portrait of the Higgs boson by the CMS experiment ten years after the discovery
• Electroweak and QCD corrections to Higgs production via vector-boson fusion at the LHC
• A detailed map of Higgs boson interactions by the ATLAS experiment ten years after the discovery
• Measurement of the $Z/{\gamma }^{\ast }$ boson transverse momentum distribution in $pp$ collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector
• NLO Higgs boson production via vector-boson fusion matched with shower in POWHEG
• Performance of electron and photon triggers in ATLAS during LHC Run 2
• Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector
• NLO Higgs boson production via gluon fusion matched with shower in POWHEG
• Muon reconstruction and identification efficiency in ATLAS using the full Run 2 $pp$ collision data set at $\sqrt{s}=13$ TeV
• Strong and electroweak corrections to the production of Higgs+2jets via weak interactions at the LHC
• Observation of Higgs boson decay to bottom quarks
• Higgs production via vector-boson fusion at NNLO in QCD
• ATLAS data quality operations and performance for 2015-2018 data-taking
• Performance of the ATLAS muon triggers in Run 2
• Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
• Measurement of the muon reconstruction performance of the ATLAS detector using 2011 and 2012 LHC proton-proton collision data
• Observation of $H\to b\bar{b}$ decays and $VH$ production with the ATLAS detector
• Mixed QCD-electroweak corrections to Higgs boson production in gluon fusion
• Observation of $\mathrm{t}\overline{\mathrm{t}}$H production
• Electroweak corrections to Higgs-strahlung off W/Z bosons at the Tevatron and the LHC with HAWK
• Gluon-induced Higgs-strahlung at next-to-leading order QCD
• Higgs boson decays to quarkonia and the Hccbar coupling
• Measurement of $W^{\pm }$ and $Z$-boson production cross sections in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Evidence for Higgs boson decay to a pair of muons
• Higgs-dependent Yukawa couplings
• A search for the dimuon decay of the Standard Model Higgs boson with the ATLAS detector
• Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run-1 data
• Exclusive Radiative Higgs Decays as Probes of Light-Quark Yukawa Couplings
• Search for a standard model-like Higgs boson in the mu+ mu- and e+ e- decay channels at the LHC
• Constraining the Charm Yukawa and Higgs-quark Coupling Universality
• Relativistic corrections to Higgs boson decays to quarkonia
• Search for the Decay of the Higgs Boson to Charm Quarks with the ATLAS Experiment
• Exclusive Radiative Decays of W and Z Bosons in QCD Factorization
• Search for the Higgs boson decays $H\to ee$ and $H\to e\mu$ in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for Higgs and $Z$ Boson Decays to $J/\psi \gamma$ and ${\rm Y}(nS)\gamma$ with the ATLAS Detector
• Search for lepton-flavor violating decays of the Higgs boson in the $\mu \tau$ and e$\tau$ final states in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• A search for the standard model Higgs boson decaying to charm quarks
• Searches for exclusive Higgs and $Z$ boson decays into $J/\psi \gamma$, $\psi (2S)\gamma$, and ${\rm Y}(nS)\gamma$ at $\sqrt{s}=13$ TeV with the ATLAS detector
• Searches for lepton-flavour-violating decays of the Higgs boson in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Measurements of Higgs boson production cross-sections in the $H\to {\tau }^{+}{\tau }^{-}$ decay channel in $pp$ collisions at $\sqrt{s}=13\text{TeV}$ with the ATLAS detector
• Search for exclusive Higgs and $Z$ boson decays to $\varphi \gamma$ and $\rho \gamma$ with the ATLAS detector
• Rare exclusive decays of the Z-boson revisited
• Search for top quark decays $t\to qH$, with $H\to \gamma \gamma$, in $\sqrt{s}=13$ TeV $pp$ collisions using the ATLAS detector
• Search for flavor-changing neutral currents in top quark decays $t\to Hc$ and $t\to Hu$ in multilepton final states in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for rare decays of Z and Higgs bosons to J$/\psi$ and a photon in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for a Higgs boson decaying into gamma* gamma to ll gamma with low dilepton mass in pp collisions at sqrt(s) = 8 TeV
• New approach to the resummation of logarithms in Higgs-boson decays to a vector quarkonium plus a photon
• $Z$-boson decays to a vector quarkonium plus a photon
• Search for Higgs and Z boson decays to J/$\psi$ or ${\rm Y}$ pairs in the four-muon final state in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for Higgs and $Z$ Boson Decays to $\varphi \gamma$ with the ATLAS Detector
• Order $v^4$ corrections to Higgs boson decay into $J/\psi +\gamma$
• Addendum: New approach to the resummation of logarithms in Higgs-boson decays to a vector quarkonium plus a photon [Phys. Rev. D 95, 054018 (2017)]
• Search for flavor-changing neutral current interactions of the top quark and the Higgs boson decaying to a bottom quark-antiquark pair at $\sqrt{s}$ = 13 TeV
• Bounding the Charm Yukawa
• Non-Parametric Data-Driven Background Modelling using Conditional Probabilities
• Search for decays of the 125 GeV Higgs boson into a Z boson and a $\rho$ or $\varphi$ meson
• Next-to-leading order QCD corrections to Higgs boson decay to quarkonium plus a photon

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• Search for the exclusive $W$ boson hadronic decays $W^{\pm }\to {\pi }^{\pm }\gamma$, $W^{\pm }\to K^{\pm }\gamma$ and $W^{\pm }\to {\rho }^{\pm }\gamma$ with the ATLAS detector
• Search for rare decays of the Z and Higgs bosons to a J/$\psi$ or $\psi$(2S) meson and a photon in proton-proton collisions at $\sqrt{s}$ = 13 TeV
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