Search for new resonances decaying to pairs of merged diphotons in proton-proton collisions at $\sqrt{s}$ = 13 TeV

Abstract

A search is presented for an extended Higgs sector with two new particles, X and $\varphi$, in the process X $\to$ $\varphi \varphi$ $\to$ $(\gamma \gamma )(\gamma \gamma )$. Novel neural networks classify events with diphotons that are merged and determine the diphoton masses. The search uses LHC proton-proton collision data at $\sqrt{s}$ = 13 TeV collected with the CMS detector, corresponding to an integrated luminosity of 138 fb${}^{-1}$. No evidence of such resonances is seen. Upper limits are set on the production cross section for $m_X$ between 300 and 3000 GeV and $m_{\varphi }/m_X$ between 0.5 and 2.5%, representing the most sensitive search in this channel.

arXiv commentReplaced 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-22-022 (CMS Public Pages)

References in corpus (50)

• 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
• An Introduction to PYTHIA 8.2
• 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
• Confidence Level Computation for Combining Searches with Small Statistics
• Better Jet Clustering Algorithms
• Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions
• Particle-flow reconstruction and global event description with the CMS detector
• The CMS trigger system
• Description and performance of track and primary-vertex reconstruction with the CMS tracker
• Event generator tunes obtained from underlying event and multiparton scattering measurements
• Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV
• Performance of the CMS muon detector and muon reconstruction with proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Transverse-momentum resummation and the spectrum of the Higgs boson at the LHC
• Extraction and validation of a new set of CMS PYTHIA8 tunes from underlying-event measurements
• Trial factors for the look elsewhere effect in high energy physics
• Performance of the CMS Level-1 trigger in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Precision luminosity measurement in proton-proton collisions at $\sqrt{s}=$ 13 TeV in 2015 and 2016 at CMS
• Electron and photon reconstruction and identification with the CMS experiment at the CERN LHC
• Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at sqrt(s) = 8 TeV
• Performance of missing transverse momentum reconstruction in proton-proton collisions at $\sqrt{s}=$ 13 TeV using the CMS detector
• Transverse-momentum resummation: Higgs boson production at the Tevatron and the LHC
• Prompt neutrinos from atmospheric c-cbar and b-bbar production and the gluon at very small x
• The q_T spectrum of the Higgs boson at the LHC in QCD perturbation theory
• Performance of reconstruction and identification of $\tau$ leptons decaying to hadrons and ${\nu }_{\tau }$ in pp collisions at $\sqrt{s}=$ 13 TeV
• Search for narrow resonances decaying to dijets in proton-proton collisions at sqrt(s) = 13 TeV
• Search for New Phenomena in Dijet Mass and Angular Distributions from $pp$ Collisions at $\sqrt{s}$ = 13 TeV with the ATLAS Detector
• Higgs Boson Decays to CP-odd Scalars at the Tevatron and Beyond
• Search for narrow and broad dijet resonances in proton-proton collisions at $\sqrt{s}=$ 13 TeV and constraints on dark matter mediators and other new particles
• Search for dijet resonances in proton-proton collisions at sqrt(s) = 13 TeV and constraints on dark matter and other models
• Pulling Out All the Tops with Computer Vision and Deep Learning
• Search for new phenomena in events with at least three photons collected in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• The CMS statistical analysis and combination tool: COMBINE
• Handling uncertainties in background shapes: the discrete profiling method
• Two-real-scalar-singlet extension of the SM: LHC phenomenology and benchmark scenarios
• Anatomy of Exotic Higgs Decays in 2HDM
• Hierarchical vs Degenerate 2HDM: The LHC Run 1 Legacy at the Onset of Run 2
• Two Higgs Doublets and a Complex Singlet: Disentangling the Decay Topologies and Associated Phenomenology
• Simultaneous Search for Extra Light and Heavy Higgs Bosons via Cascade Decays
• The NMSSM is within Reach of the LHC: Mass Correlations & Decay Signatures
• Status and prospects of the nMSSM after LHC Run-1
• Search for the exotic decay of the Higgs boson into two light pseudoscalars with four photons in the final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Search for exotic Higgs boson decays H $\to$ $\mathcal{AA}$ $\to$ 4$\gamma$ with events containing two merged diphotons in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Search for pairs of highly collimated photon-jets in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Search for short- and long-lived axion-like particles in $H\to aa\to 4\gamma$ decays with the ATLAS experiment at the LHC
• Reconstruction of decays to merged photons using end-to-end deep learning with domain continuation in the CMS detector
• Search for new particles in an extended Higgs sector with four b quarks in the final state at $\sqrt{s}=$ 13 TeV

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