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Combination of searches for Higgs Boson pair production in 𝑝⁒𝑝 collisions at βˆšπ‘ =13  TeV with the ATLAS Detector

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This Letter presents results from a combination of searches for Higgs boson pair production using 126–140  fbβˆ’1 of proton-proton collision data at βˆšπ‘  =13  TeV recorded with the ATLAS detector. At 95% confidence level (CL), the upper limit on the production rate is 2.9 times the standard model (SM) p...

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Main Authors: Aad, Georges (Author) , Ackermann, Anke (Author) , Baltes, Lisa Marie (Author) , Bartels, Falk (Author) , Dittmeier, Sebastian (Author) , Dunford, Monica (Author) , Franchino, Silvia (Author) , Junkermann, Thomas (Author) , Mkrtchyan, Tigran (Author) , Ott, Philipp (Author) , Rassloff, Damir Fabrice (Author) , Sanfilippo, Lorenzo (Author) , Sauer, Christof (Author) , Schöning, André (Author) , Schultz-Coulon, Hans-Christian (Author) , Sothilingam, Varsiha (Author) , Stamen, Rainer (Author) , Starovoitov, Pavel (Author) , Vigani, Luigi (Author) , Weber, Sebastian (Author) , Wessels, Martin (Author) , Zinßer, Joachim (Author)
Corporate Author: ATLAS Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 4 September 2024
In: Physical review letters
Year: 2024, Volume: 133, Issue: 10, Pages: 1-22
ISSN:1079-7114
DOI:10.1103/PhysRevLett.133.101801
Online Access:Resolving-System, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevLett.133.101801
Verlag, kostenfrei, Volltext: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.133.101801
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Author Notes:G. Aad et al. (ATLAS Collaboration)
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Summary:This Letter presents results from a combination of searches for Higgs boson pair production using 126–140  fbβˆ’1 of proton-proton collision data at βˆšπ‘  =13  TeV recorded with the ATLAS detector. At 95% confidence level (CL), the upper limit on the production rate is 2.9 times the standard model (SM) prediction, with an expected limit of 2.4 assuming no Higgs boson pair production. Constraints on the Higgs boson self-coupling modifier πœ…πœ†=πœ†π»β‘π»β‘π»/πœ†SM 𝐻⁑𝐻⁑𝐻, and the quartic 𝐻⁑𝐻⁑𝑉⁑ coupling modifier πœ…2⁒𝑉=𝑔𝐻⁑𝐻⁑𝑉⁒𝑉⁑/𝑔SM 𝐻⁑𝐻⁑𝑉⁒𝑉, are derived individually, fixing the other parameter to its SM value. The observed 95% CL intervals are βˆ’1.2<πœ…πœ†<7.2 and 0.6<πœ…2⁒𝑉<1.5 , respectively, while the expected intervals are βˆ’1.6<πœ…πœ†<7.2 and 0.4<πœ…2⁒𝑉<1.6 in the SM case. Constraints obtained for several interaction parameters within Higgs effective field theory are the strongest to date, offering insights into potential deviations from SM predictions.
Item Description:ATLAS Collaboration: G. Aad, A. Ackermann, L.M. Baltes, F. Bartels, S.J. Dittmeier, M. Dunford, S. Franchino, T. Junkermann, T. Mkrtchyan, P. Ott, D.F. Rassloff, L. Sanfilippo, C. Sauer, A. Schoening, H-C. Schultz-Coulon, V. Sothilingam, R. Stamen, L. Vigani, M. Wessels, J. Zinsser [und 2910 weitere]
Gesehen am 02.03.2026
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.133.101801

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