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Search for resonant and nonresonant Higgs boson pair production in the $b\overline{b}\ell \nu \ell \nu$ final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV


CMS Collaboration; Canelli, Florencia; Kilminster, Benjamin; Aarestad, Thea; Caminada, Lea; de Cosa, Annapaoloa; Del Burgo, Riccardo; Donato, Silvio; Galloni, Camilla; Hinzmann, Andreas; Hreus, Tomas; Ngadiuba, Jennifer; Pinna, Deborah; Rauco, Giorgia; Robmann, Peter; Salerno, Daniel; Schweiger, Korbinian; Seitz, Claudia; Takahashi, Yuta; Zucchetta, Alberto; et al (2018). Search for resonant and nonresonant Higgs boson pair production in the $b\overline{b}\ell \nu \ell \nu$ final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV. Journal of High Energy Physics, 01:054.

Abstract

Searches for resonant and nonresonant pair-produced Higgs bosons (HH) decaying respectively into $\ell \nu \ell \nu$, through either W or Z bosons, and $b\overline{b}$ are presented. The analyses are based on a sample of proton-proton collisions at $\sqrt{s}$ = 13 TeV, collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 35.9 $fb^{−1}$. Data and predictions from the standard model are in agreement within uncertainties. For the standard model HH hypothesis, the data exclude at 95% confidence level a product of the production cross section and branching fraction larger than 72 fb, corresponding to 79 times the standard model prediction. Constraints are placed on different scenarios considering anomalous couplings, which could affect the rate and kinematics of HH production. Upper limits at 95% confidence level are set on the production cross section of narrow-width spin-0 and spin-2 particles decaying to Higgs boson pairs, the latter produced with minimal gravity-like coupling.

Abstract

Searches for resonant and nonresonant pair-produced Higgs bosons (HH) decaying respectively into $\ell \nu \ell \nu$, through either W or Z bosons, and $b\overline{b}$ are presented. The analyses are based on a sample of proton-proton collisions at $\sqrt{s}$ = 13 TeV, collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 35.9 $fb^{−1}$. Data and predictions from the standard model are in agreement within uncertainties. For the standard model HH hypothesis, the data exclude at 95% confidence level a product of the production cross section and branching fraction larger than 72 fb, corresponding to 79 times the standard model prediction. Constraints are placed on different scenarios considering anomalous couplings, which could affect the rate and kinematics of HH production. Upper limits at 95% confidence level are set on the production cross section of narrow-width spin-0 and spin-2 particles decaying to Higgs boson pairs, the latter produced with minimal gravity-like coupling.

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Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2018
Deposited On:08 Feb 2018 16:49
Last Modified:20 Feb 2018 09:04
Publisher:Springer
ISSN:1029-8479
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1007/JHEP01(2018)054

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