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Search for nonresonant Higgs boson pair production in the four leptons plus twob jets final state in proton-proton collisions at s = 13 TeV

Abstract: The first search for nonresonant production of Higgs boson pairs (HH) with one H decaying into four leptons and the other into a pair of b quarks is presented, using proton-proton collisions recorded at a center-of-mass energy of p s = 13TeV by the CMS experiment. The analyzed data correspond to an integrated luminosity of 138 fb-1. A 95% confidence level upper limit of 32.4 is set on the signal strength modifier u, defined as the ratio of the observed HH production rate in the HH -> ZZbb -> 4`bb decay channel to the standard model (SM) expectation. Possible modifications of the H trilinear coupling HHH with respect to the SM value are investigated. The coupling modifier , defined as HHH divided by its SM prediction, is constrained to be within the observed (expected) range -8.8 (-9.8) <  < 13.4 (15.0) at 95% confidence level.

 Autoría: Tumasyan A., Adam W., Andrejkovic J.W., Bergauer T., Chatterjee S., Damanakis K., Dragicevic M., Del Valle A.E., Hussain P.S., Jeitler M., Krammer N., Lechner L., Liko D., Mikulec I., Paulitsch P., Pitters F.M., Schieck J., Schöfbeck R., Schwarz D., Templ S., Waltenberger W., Wulz C.E., Darwish M.R., Janssen T., Kello T., Sfar H.R., Van Mechelen P., Bols E.S., D’hondt J., De Moor A., Delcourt M., El Faham H., Lowette S., Moortgat

 Fuente: Journal of High Energy Physics, 2023, 2023, 130

 Editorial: Springer Verlag

 Fecha de publicación: 01/06/2023

 Nº de páginas: 41

 Tipo de publicación: Artículo de Revista

 DOI: 10.1007/JHEP06(2023)130

 ISSN: 1126-6708,1029-8479

 Url de la publicación: https://doi.org/10.1007/JHEP06(2023)130