@Article{ATLASCollaborationAad_etal2023,
author="ATLAS Collaboration (Aad, G. et al
and Amos, K. R.
and Aparisi Pozo, J. A.
and Bailey, A. J.
and Cabrera Urban, S.
and Cantero, J.
and Cardillo, F.
and Castillo Gimenez, V.
and Costa, M. J.
and Didenko
and Escobar, C.
and Fiorini, L.
and Fullana Torregrosa, E.
and Fuster, J.
and Garcia, C.
and Garcia Navarro, J. E.
and Gomez Delegido, A. J.
and Gonzalez de la Hoz, S.
and Gonzalvo Rodriguez, G. R.
and Guerrero Rojas, J. G. R.
and Higon-Rodriguez, E.
and Lacasta, C.
and Lozano Bahilo, J. J.
and Marti-Garcia, S.
and Martinez Agullo, P.
and Miralles Lopez, M.
and Mitsou, V. A.
and Monsonis Romero, L.
and Moreno Llacer, M.
and Munoz Perez, D.
and Navarro-Gonzalez, J.
and Poveda, J.
and Prades Iba{\~{n}}ez, A.
and Rubio Jimenez, A.
and Ruiz-Martinez, A.
and Sabatini, P.
and Salt, J.
and Sanchez Sebastian, V.
and Sayago Galvan, I.
and Senthilkumar, V.
and Soldevila, U.
and Sanchez, J.
and Torro Pastor, E.
and Valero, A.
and Valiente Moreno, E.
and Valls Ferrer, J. A.
and Varriale, L.
and Villaplana Perez, M.
and Vos, M.",
title="Constraints on the Higgs boson self-coupling from single- and double-Higgs production with the ATLAS detector using pp collisions at {\&} RADIC;s=13 TeV",
journal="Physics Letters B",
year="2023",
publisher="Elsevier",
volume="843",
pages="137745--20pp",
abstract="Constraints on the Higgs boson self-coupling are set by combining double-Higgs boson analyses in the bb over bar bb over bar , bb over bar {\&} tau;+{\&} tau;- and bb over bar {\&} gamma; {\&} gamma; decay channels with single-Higgs boson analyses targeting the {\&} gamma;{\&} gamma;, Z Z*, W W *, {\&} tau;+{\&} tau;- and bb over bar decay channels. The data used in these analyses were recorded by the ATLAS detector at the LHC in proton-proton collisions at {\&} RADIC;s = 13 TeV and correspond to an integrated luminosity of 126-139 fb-1. The combination of the double-Higgs analyses sets an upper limit of {\&} mu;HH < 2.4 at 95{\%} confidence level on the double-Higgs production cross-section normalised to its Standard Model prediction. Combining the single-Higgs and double-Higgs analyses, with the assumption that new physics affects only the Higgs boson self-coupling ({\&} lambda;HHH), values outside the interval -0.4 < {\&} kappa;{\&} lambda; = ({\&} lambda;HHH/{\&} lambda;SM H H H ) < 6.3 are excluded at 95{\%} confidence level. The combined single-Higgs and double-Higgs analyses provide results with fewer assumptions, by adding in the fit more coupling modifiers introduced to account for the Higgs boson interactions with the other Standard Model particles. In this relaxed scenario, the constraint becomes -1.4 < {\&} kappa;{\&} lambda; < 6.1 at 95{\%} CL.",
optnote="WOS:001037066800001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5666), last updated on Sat, 23 Sep 2023 15:08:12 +0000",
issn="0370-2693",
doi="10.1016/j.physletb.2023.137745",
opturl="https://arxiv.org/abs/2211.01216",
opturl="https://doi.org/10.1016/j.physletb.2023.137745",
language="English"
}