A search is presented for an extended Higgs sector with two new particles, X and., in the process X ->phi phi ->(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 root 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.=m(X) between 0.5% and 2.5%, representing the most sensitive search in this channel.

Search for New Resonances Decaying to Pairs of Merged Diphotons in Proton-Proton Collisions at √s=13 TeV

Bianchini, L.;Cipriani, M.;Donato, S.;Messineo, A.;Rizzi, A.;Tonelli, G.;Marini, A. C.;
2025-01-01

Abstract

A search is presented for an extended Higgs sector with two new particles, X and., in the process X ->phi phi ->(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 root 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.=m(X) between 0.5% and 2.5%, representing the most sensitive search in this channel.
2025
Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Hussain, P. S.; Jeitler, M.;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/1358008
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