Abstract
A search is presented for an extended Higgs sector with two new particles, X and ϕ, in the process X→ϕϕ→(γγ)(γγ). 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_{ϕ}/m_{X} between 0.5% and 2.5%, representing the most sensitive search in this channel.
Keywords
Physics
Higgs boson
Luminosity
Proton
Algorithm
Particle physics
Nuclear physics
Computer science
Astrophysics
Subject Areas
Particle physics theoretical and experimental studies
·Nuclear and High Energy Physics ·Physical Sciences
Quantum Chromodynamics and Particle Interactions
·Nuclear and High Energy Physics ·Physical Sciences
Particle Detector Development and Performance
·Nuclear and High Energy Physics ·Physical Sciences
Citations by Year
2025: 1
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