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Search for a new resonance decaying into two spin-0 bosons in a final state with two photons and two bottom quarks in proton-proton collisions at $ \sqrt{s} $ = 13 TeV

CMS Collaboration; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Escalante Del Valle, A.; Hussain, P. S.; Jeitler, M.; Krammer, N.; Lechner, L.; Liko, D.; Mikulec, I.; Paulitsch, P.; Pitters, F. M.; Schieck, J.; Schöfbeck, R.; ... mehr

Abstract:

A search for a new boson X is presented using CERN LHC proton-proton collision data collected by the CMS experiment at s√ = 13 TeV in 2016-2018, and corresponding to an integrated luminosity of 138 fb$^{−1}$. The resonance X decays into either a pair of Higgs bosons HH of mass 125 GeV or an H and a new spin-0 boson Y. One H subsequently decays to a pair of photons, and the second H or Y, to a pair of bottom quarks. The explored mass ranges of X are 260-1000 GeV and 300-1000 GeV, for decays to HH and to HY, respectively, with the Y mass range being 90-800 GeV. For a spin-0 X hypothesis, the 95% confidence level upper limit on the product of its production cross section and decay branching fraction is observed to be within 0.90-0.04 fb, depending on the masses of X and Y. The largest deviation from the background-only hypothesis with a local (global) significance of 3.8 (below 2.8) standard deviations is observed for X and Y masses of 650 and 90 GeV, respectively. The limits are interpreted using several models of new physics.


Volltext §
DOI: 10.5445/IR/1000175788
Veröffentlicht am 31.10.2024
Originalveröffentlichung
DOI: 10.48550/arXiv.2310.01643
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Zitationen: 1
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Zugehörige Institution(en) am KIT Helmholtz-Institut Ulm (HIU)
Institut für Astroteilchenphysik (IAP)
Institut für Experimentelle Teilchenphysik (ETP)
Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Scientific Computing Center (SCC)
Publikationstyp Forschungsbericht/Preprint
Publikationsdatum 03.06.2024
Sprache Englisch
Identifikator ISSN: 1029-8479
KITopen-ID: 1000175788
Verlag arxiv
Serie High Energy Physics - Experiment
Nachgewiesen in arXiv
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