Search for dark matter in association with an energetic photon in pp collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector

Abstract

A search for dark matter is conducted in final states containing a photon and missing transverse momentum in proton$-$proton collisions at $\sqrt{s}$ = 13 TeV. The data, collected during 2015$-$2018 by the ATLAS experiment at the CERN LHC, correspond to an integrated luminosity of 139 fb${}^{-1}$. No deviations from the predictions of the Standard Model are observed and 95% confidence-level upper limits between 2.45 fb and 0.5 fb are set on the visible cross section for contributions from physics beyond the Standard Model, in different ranges of the missing transverse momentum. The results are interpreted as 95% confidence-level limits in models where weakly interacting dark-matter candidates are pair-produced via an s-channel axial-vector or vector mediator. Dark-matter candidates with masses up to 415 (580) GeV are excluded for axial-vector (vector) mediators, while the maximum excluded mass of the mediator is 1460 (1470) GeV. In addition, the results are expressed in terms of 95% confidence-level limits on the parameters of a model with an axion-like particle produced in association with a photon, and are used to constrain the coupling $g_{aZ\gamma }$ of an axion-like particle to the electroweak gauge bosons.

arXiv comment46 pages in total, author list starting page 24, 7 figures, 8 tables, submitted to JHEP. All figures including auxiliary figures are available at: https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2018-63/

References in corpus (62)

• Planck 2015 results. XIII. Cosmological parameters
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• The anti-k_t jet clustering algorithm
• A Brief Introduction to PYTHIA 8.1
• FastJet user manual
• Asymptotic formulae for likelihood-based tests of new physics
• Parton distributions for the LHC Run II
• A direct empirical proof of the existence of dark matter
• Event generation with SHERPA 1.1
• Dark Matter Search Results from a One Tonne$\times$Year Exposure of XENON1T
• The ATLAS Simulation Infrastructure
• Scattering Amplitudes with Open Loops
• A parton shower algorithm based on Catani-Seymour dipole factorisation
• Comix, a new matrix element generator
• Event Generation with Sherpa 2.2
• Dark Matter Results From 54-Ton-Day Exposure of PandaX-II Experiment
• Performance of the ATLAS Trigger System in 2015
• QCD matrix elements and truncated showers
• Constraints on Dark Matter from Colliders
• 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
• Topological cell clustering in the ATLAS calorimeters and its performance in LHC Run 1
• Improved luminosity determination in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector at the LHC
• Electron and photon performance measurements with the ATLAS detector using the 2015-2017 LHC proton-proton collision data
• The PDF4LHC Working Group Interim Recommendations
• Low-Mass Dark Matter Search with the DarkSide-50 Experiment
• Dark Matter Benchmark Models for Early LHC Run-2 Searches: Report of the ATLAS/CMS Dark Matter Forum
• Jet energy scale measurements and their systematic uncertainties in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Performance of electron and photon triggers in ATLAS during LHC Run 2
• Simplified Models for Dark Matter Searches at the LHC
• Performance of missing transverse momentum reconstruction with the ATLAS detector using proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Dark Matter Search Results from the Complete Exposure of the PICO-60 C${}_3$F${}_8$ Bubble Chamber
• NLO matrix elements and truncated showers
• HistFitter software framework for statistical data analysis
• Search for dark matter and other new phenomena in events with an energetic jet and large missing transverse momentum using the ATLAS detector
• ALPs Effective Field Theory and Collider Signatures
• Search for Light Dark Matter Interactions Enhanced by the Migdal effect or Bremsstrahlung in XENON1T
• Implications of unitarity and gauge invariance for simplified dark matter models
• Constraining the Spin-Dependent WIMP-Nucleon Cross Sections with XENON1T
• Limits on spin-dependent WIMP-nucleon cross section obtained from the complete LUX exposure
• Low-Mass Dark Matter Search with CDMSlite
• Measurement of the inclusive isolated prompt photon cross section in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
• LHC probes the hidden sector
• Axion-Like Particles at Future Colliders
• Search for dark matter in events with a hadronically decaying W or Z boson and missing transverse momentum in pp collisions at sqrt(s)=8 TeV with the ATLAS detector
• Characterising dark matter searches at colliders and direct detection experiments: Vector mediators
• Search for new physics in final states with an energetic jet or a hadronically decaying W or Z boson and transverse momentum imbalance at $\sqrt{s}=$ 13 TeV
• Spin-Dependent Weakly-Interacting-Massive-Particle--Nucleon Cross Section Limits from First Data of PandaX-II Experiment
• Study of Monte Carlo approach to experimental uncertainty propagation with MSTW 2008 PDFs
• Final Results of the PICASSO Dark Matter Search Experiment
• Measurement of the inclusive isolated prompt photon cross-section in pp collisions at sqrt(s)= 7 TeV using 35 pb-1 of ATLAS data
• Reweighting QCD matrix-element and parton-shower calculations
• Search for dark matter at $\sqrt{s}=13$ TeV in final states containing an energetic photon and large missing transverse momentum with the ATLAS detector
• Search for dark matter produced in association with bottom or top quarks in $\sqrt{s}$ = 13 TeV pp collisions with the ATLAS detector
• Recommendations of the LHC Dark Matter Working Group: Comparing LHC searches for heavy mediators of dark matter production in visible and invisible decay channels
• Search for dark matter in events with a hadronically decaying vector boson and missing transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Plotting the Differences Between Data and Expectation
• Search for dark matter in events with energetic, hadronically decaying top quarks and missing transverse momentum at $\sqrt{s}=$ 13 TeV
• Search for dark matter and unparticles in events with a Z boson and missing transverse momentum in proton-proton collisions at sqrt(s) = 13 TeV
• Search for dark matter in association with a Higgs boson decaying to two photons at $\sqrt{s}$= 13 TeV with the ATLAS detector
• Search for associated production of dark matter with a Higgs boson decaying to b b-bar or gamma-gamma at sqrt(s) = 13 TeV
• Search for new physics in final states with a single photon and missing transverse momentum in proton-proton collisions at $\sqrt{s}=$ 13 TeV

Cited by in corpus (21)

• Search for dark matter produced in association with a Standard Model Higgs boson decaying into $b$-quarks using the full Run 2 dataset from the ATLAS detector
• Nonresonant Searches for Axion-Like Particles in Vector Boson Scattering Processes at the LHC
• Sensitivity of future linear $e^{+}{e}^{-}$ colliders to processes of dark matter production with light mediator exchange
• Constraints on spin-0 dark matter mediators and invisible Higgs decays using ATLAS 13 TeV $pp$ collision data with two top quarks and missing transverse momentum in the final state
• Anomalous couplings in $Z\gamma$ events at NNLO+PS and improving $\nu \bar{\nu }\gamma$ backgrounds in dark-matter searches
• Unitarity constraints on ALP interactions
• Robust Limits from Upcoming Neutrino Telescopes and Implications on Minimal Dark Matter Models
• New Physics Search at the CEPC: a General Perspective
• Testing Neutrino Dipole Portal by Long-lived Particle Detectors at the LHC
• Lepton Phenomenology of Stueckelberg Portal to Dark Sector
• Prospects for detecting axion-like particles via the decay $Z\to af\bar{f}$ at future $Z$ factories
• Is there a (Pseudo)Scalar at 95 GeV?
• Prospecting bipartite Dark Matter through Gravitational Waves
• Towards a method to anticipate dark matter signals with deep learning at the LHC
• Dark SU(2) Stueckelberg portal
• Improvement and generalization of ABCD method with Bayesian inference
• Probing sub-TeV Higgsinos aided by a ML-based top tagger in the context of Trilinear RPV SUSY
• Searching for New Physics in Hadronic Final States with Run 2 Proton-Proton Collision Data at the LHC
• NNLO QCD predictions of the asymmetry probe of the $Z\gamma$ pair-production process
• Milky Way Satellite Census. IV. Constraints on Decaying Dark Matter from Observations of Milky Way Satellite Galaxies
• New Physics and Two Boosted W-jets plus Missing Energy