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Search for triple Higgs boson production in the 6b final state using pp collisions at √s=13 TeV with the ATLAS detector

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A search for the production of three Higgs bosons (𝐻⁑𝐻⁑𝐻) in the 𝑏⁒¯𝑏⁒𝑏⁒¯𝑏⁒𝑏⁒¯𝑏 final state is presented. The search uses 126 fbβˆ’1 of proton-proton collision data at βˆšπ‘  =13 TeV collected with the ATLAS detector at the Large Hadron Collider. The analysis targets both nonresonant and resonant producti...

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Main Authors: Aad, Georges (Author) , Ackermann, Anke (Author) , Backes, Mathias (Author) , Baltes, Lisa Marie (Author) , Bartels, Falk (Author) , Dittmeier, Sebastian (Author) , Dunford, Monica (Author) , Franchino, Silvia (Author) , Junkermann, Thomas (Author) , Mkrtchyan, Tigran (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) , Vigani, Luigi (Author) , Weber, Sebastian (Author) , Wessels, Martin (Author) , Zinßer, Joachim (Author)
Corporate Author: ATLAS Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 13 February 2025
In: Physical review
Year: 2025, Volume: 111, Issue: 3, Pages: 1-32
ISSN:2470-0029
DOI:10.1103/PhysRevD.111.032006
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevD.111.032006
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.111.032006
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Author Notes:G. Aad et al., (ATLAS Collaboration)
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Summary:A search for the production of three Higgs bosons (𝐻⁑𝐻⁑𝐻) in the 𝑏⁒¯𝑏⁒𝑏⁒¯𝑏⁒𝑏⁒¯𝑏 final state is presented. The search uses 126 fbβˆ’1 of proton-proton collision data at βˆšπ‘  =13 TeV collected with the ATLAS detector at the Large Hadron Collider. The analysis targets both nonresonant and resonant production of 𝐻⁑𝐻⁑𝐻. The resonant interpretations primarily consider a cascade decay topology of 𝑋 →𝑆⁒𝐻 →𝐻⁑𝐻⁑𝐻 with masses of the new scalars 𝑋 and 𝑆 up to 1.5 and 1 TeV, respectively. In addition to scenarios where 𝑆 is off-shell, the nonresonant interpretation includes a search for Standard Model 𝐻⁑𝐻⁑𝐻 production, with limits on the trilinear and quartic Higgs self-coupling set. No evidence for 𝐻⁑𝐻⁑𝐻 production is observed. An upper limit of 59 fb is set, at the 95% confidence level, on the cross section for Standard Model 𝐻⁑𝐻⁑𝐻 production.
Item Description:The ATLAS Collaboration: G. Aad, A. Ackermann, M. Backes, L.M. Baltes, F. Bartels, S.J. Dittmeier, M. Dunford, S. Franchino, T. Junkermann, T. Mkrtchyan, D.F. Rassloff, L. Sanfilippo, C. Sauer, A. Schoening, H.-C. Schultz-Coulon, V. Sothilingam, R. Stamen, L. Vigani, S.M. Weber, M. Wessels, J. Zinsser und weitere 2856
Gesehen am 17.10.2025
Physical Description:Online Resource
ISSN:2470-0029
DOI:10.1103/PhysRevD.111.032006

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