Projections for HH measurements in the bbZZ(4l) final state with the CMS experiment at the HL-LHC

Fontanesi, E. (2020) Projections for HH measurements in the bbZZ(4l) final state with the CMS experiment at the HL-LHC. Il nuovo cimento C, 43 (2-3). pp. 1-6. ISSN 1826-9885

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Abstract

Prospects for the study of Higgs boson pair (HH) production in the HH → bb4l (l = e, ¯ μ) channel are studied in the context of the High-Luminosity LHC. The analysis is performed using a parametric simulation of the Phase-2 CMS detector response provided by the Delphes software and assuming an average of 200 proton-proton collisions per bunch crossing at a center-of-mass energy of 14 TeV. Assuming a projected integrated luminosity of 3000 fb−1, the expected significance for the nonresonant standard model (SM) HH signal is 0.37 σ; a 95% confidence level (CL) upper limit on its cross section is set to 6.6 times the SM prediction. The statistical combination of five decay channels (bbb¯ b, b ¯ b¯ττ , bb¯γγ, bbWW, b ¯ bZZ) ¯ results in an expected significance for the SM HH signal of 2.6 σ and an expected 68% and 95% CL intervals for the Higgs self-coupling modifier κλ = λHHH/λSM HHH of [0.35, 1.9] and [−0.18, 3.6], respectively.

Item Type:	Article
Subjects:	500 Scienze naturali e Matematica > 530 Fisica
Depositing User:	Marina Spanti
Date Deposited:	04 Feb 2021 15:06
Last Modified:	04 Feb 2021 15:06
URI:	http://eprints.bice.rm.cnr.it/id/eprint/20756

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