Search for the nonresonant production of Higgs boson pairs via gluon fusion and vector-boson fusion in the b(b)[bar]𝜏+𝜏- final state in proton-proton collisions at √s=13 TeV with the ATLAS detector

A search for the nonresonant production of Higgs boson pairs in the 𝐻⁡𝐻 →𝑏⁢¯𝑏⁢𝜏+⁢𝜏− channel is performed using 140 fb−1 of proton-proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. The analysis strategy is optimized to probe anoma...

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Main Authors: Aad, Georges (Author) , Ackermann, Anke (Author) , Baltes, Lisa Marie (Author) , Bartels, Falk (Author) , Rio, Fernando del (Author) , Dittmeier, Sebastian (Author) , Dunford, Monica (Author) , Franchino, Silvia (Author) , Junkermann, Thomas (Author) , Klassen, Martin (Author) , Mkrtchyan, Tigran (Author) , Ott, Philipp (Author) , Rassloff, Damir Fabrice (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) Thesis
Language:English
Published: 9 August 2024
In: Physical review
Year: 2024, Volume: 110, Issue: 3, Pages: 1-35
ISSN:2470-0029
DOI:10.1103/PhysRevD.110.032012
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevD.110.032012
Verlag, kostenfrei, Volltext: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.110.032012
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Author Notes:ATLAS Collaboration*

MARC

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246 3 3 |a Search for the nonresonant production of Higgs boson pairs via gluon fusion and vector-boson fusion in the b(b)bar tau + tau - final state in proton-proton collisions at square root s = 13 TeV with the ATLAS detector 
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520 |a A search for the nonresonant production of Higgs boson pairs in the ⁡ →⁢¯⁢+⁢− channel is performed using 140 fb−1 of proton-proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. The analysis strategy is optimized to probe anomalous values of the Higgs boson self-coupling modifier and of the quartic ⁡⁡⁢ (=,) coupling modifier 2⁢. No significant excess above the expected background from Standard Model processes is observed. An observed (expected) upper limit ⁡ <5.9⁢(3.3) is set at 95% confidence-level on the Higgs boson pair production cross section normalized to its Standard Model prediction. The coupling modifiers are constrained to an observed (expected) 95% confidence interval of −3.1 < <9.0 (−2.5 < <9.3) and −0.5 <2⁢ <2.7 (−0.2 <2⁢ <2.4), assuming all other Higgs boson couplings are fixed to the Standard Model prediction. The results are also interpreted in the context of effective field theories via constraints on anomalous Higgs boson couplings and Higgs boson pair production cross sections assuming different kinematic benchmark scenarios. 
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