Электронный каталог

Статья

Hayrapetyan, A.
Search for New Resonances Decaying to Pairs of Merged Diphotons in Proton-Proton Collisions at *%s=13 TeV / A.Hayrapetyan, S.Afanasiev, D.Budkouski, I.Golutvin, I.Gorbunov, V.Karjavine, V.Korenkov, N.Krasnikov, A.Lanev, A.Malakhov, V.Matveev, V.Palichik, V.Perelygin, M.Savina, V.Shalaev, S.Shmatov, S.Shulha, V.Smirnov, O.Teryaev, N.Voytishin, B.S.Yuldashev, A.Zarubin, I.Zhizhin, Z.Tsamalaidze, [CMS Collab.] // Physical Review Letters [Electronic resource]. – 2025. – Vol. 134, No. 4. – P. 041801. – URL: https://doi.org/10.1103/PhysRevLett.134.041801. – Bibliogr.: 57.

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 *%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 mX between 300 and 3000 GeV and m&sub(ϕ)=m&sub(X) between 0.5% and 2.5%, representing the most sensitive search in this channel.



ОИЯИ = ОИЯИ (JINR)2025