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Combination of searches for Higgs Boson pair production in 𝑝⁢𝑝 collisions at √𝑠=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  fb−1 of proton-proton collision data at √𝑠 =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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Hauptverfasser: Aad, Georges (VerfasserIn) , Ackermann, Anke (VerfasserIn) , Baltes, Lisa Marie (VerfasserIn) , Bartels, Falk (VerfasserIn) , Dittmeier, Sebastian (VerfasserIn) , Dunford, Monica (VerfasserIn) , Franchino, Silvia (VerfasserIn) , Junkermann, Thomas (VerfasserIn) , Mkrtchyan, Tigran (VerfasserIn) , Ott, Philipp (VerfasserIn) , Rassloff, Damir Fabrice (VerfasserIn) , Sanfilippo, Lorenzo (VerfasserIn) , Sauer, Christof (VerfasserIn) , Schöning, André (VerfasserIn) , Schultz-Coulon, Hans-Christian (VerfasserIn) , Sothilingam, Varsiha (VerfasserIn) , Stamen, Rainer (VerfasserIn) , Starovoitov, Pavel (VerfasserIn) , Vigani, Luigi (VerfasserIn) , Weber, Sebastian (VerfasserIn) , Wessels, Martin (VerfasserIn) , Zinßer, Joachim (VerfasserIn)
Körperschaft: ATLAS Collaboration (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 4 September 2024
In: Physical review letters
Year: 2024, Jahrgang: 133, Heft: 10, Pages: 1-22
ISSN:1079-7114
DOI:10.1103/PhysRevLett.133.101801
Online-Zugang: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
Volltext
Verfasserangaben:G. Aad et al. (ATLAS Collaboration)
Beschreibung
Zusammenfassung:This Letter presents results from a combination of searches for Higgs boson pair production using 126–140  fb−1 of proton-proton collision data at √𝑠 =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 𝜅𝜆=𝜆𝐻⁡𝐻⁡𝐻/𝜆SM 𝐻⁡𝐻⁡𝐻, and the quartic 𝐻⁡𝐻⁡𝑉⁡ coupling modifier 𝜅2⁢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 −1.2<𝜅𝜆<7.2 and 0.6<𝜅2⁢𝑉<1.5 , respectively, while the expected intervals are −1.6<𝜅𝜆<7.2 and 0.4<𝜅2⁢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.
Beschreibung: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
Beschreibung:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.133.101801

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