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Combination of searches for Higgs boson pairs in pp collisions at √s=13TeV with the ATLAS detector

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This letter presents a combination of searches for Higgs boson pair production using up to 36.1fb−1 of proton-proton collision data at a centre-of-mass energy s=13 TeV recorded with the ATLAS detector at the LHC. The combination is performed using six analyses searching for Higgs boson pairs decayin...

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Main Authors: Aad, Georges (Author) , Anders, Christoph (Author) , Andrei, George Victor (Author) , Antel, Claire (Author) , Bolz, Arthur (Author) , Dunford, Monica (Author) , Ferreira de Lima, Danilo Enoque (Author) , Franchino, Silvia (Author) , Geisler, Manuel Patrice (Author) , Helary, Louis (Author) , Jongmanns, Jan (Author) , Klassen, Martin (Author) , Kolb, Mathis (Author) , Krishnan, Anjali (Author) , Kugel, Andreas (Author) , Lisovyi, Mykhailo (Author) , Meyer zu Theenhausen, Hanno (Author) , Napolitano, Fabrizio (Author) , Ott, Philipp (Author) , S̜ahinsoy, Merve (Author) , Schöning, André (Author) , Schultz-Coulon, Hans-Christian (Author) , Spieker, Thomas (Author) , Stamen, Rainer (Author) , Starovoitov, Pavel (Author) , Suchek, Stanislav (Author) , Vigani, Luigi (Author) , Wang, Jike (Author) , Weber, Sebastian (Author) , Wessels, Martin (Author) , Yue, Xiaoguang (Author)
Corporate Author: ATLAS Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 2020
In: Physics letters
Year: 2020, Volume: 800
ISSN:1873-2445
DOI:10.1016/j.physletb.2019.135103
Online Access:Verlag, Volltext: https://doi.org/10.1016/j.physletb.2019.135103
Verlag, Volltext: http://www.sciencedirect.com/science/article/pii/S0370269319308251
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Author Notes:The Atlas Collaboration. G. Aad [und weitere]
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Summary:This letter presents a combination of searches for Higgs boson pair production using up to 36.1fb−1 of proton-proton collision data at a centre-of-mass energy s=13 TeV recorded with the ATLAS detector at the LHC. The combination is performed using six analyses searching for Higgs boson pairs decaying into the bb¯bb¯, bb¯W+W−, bb¯τ+τ−, W+W−W+W−, bb¯γγ and W+W−γγ final states. Results are presented for non-resonant and resonant Higgs boson pair production modes. No statistically significant excess in data above the Standard Model predictions is found. The combined observed (expected) limit at 95% confidence level on the non-resonant Higgs boson pair production cross-section is 6.9 (10) times the predicted Standard Model cross-section. Limits are also set on the ratio (κλ) of the Higgs boson self-coupling to its Standard Model value. This ratio is constrained at 95% confidence level in observation (expectation) to −5.0<κλ<12.0 (−5.8<κλ<12.0). In addition, limits are set on the production of narrow scalar resonances and spin-2 Kaluza-Klein Randall-Sundrum gravitons. Exclusion regions are also provided in the parameter space of the habemus Minimal Supersymmetric Standard Model and the Electroweak Singlet Model.
Item Description:Available online: 19 November 2019
Im Titel steht der Buchstabe "s" unter dem Wurzelsymbol
The ATLAS Collaboration. C. Anders, G. Andrei, C. Antel, A. Bolz, M. Dunford, D.E. Ferreira da Lima, S. Franchini [und weitere]
Gesehen am 19.02.2020
Physical Description:Online Resource
ISSN:1873-2445
DOI:10.1016/j.physletb.2019.135103

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