Search for Higgs boson pair production in the γγbb final state with 13TeV pp collision data collected by the ATLAS experiment Aaboud, M. Aguilar Saavedra, Juan Antonio Hadron-Hadron scattering (experiments) Higgs physics A search is performed for resonant and non-resonant Higgs boson pair production in the γγbb final state. The data set used corresponds to an integrated luminosity of 36.1 fb-1 of proton-proton collisions at a centre-of-mass energy of 13TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. No significant excess relative to the Standard Model expectation is observed. The observed limit on the non-resonant Higgs boson pair cross-section is 0.73 pb at 95% confidence level. This observed limit is equivalent to 22 times the predicted Standard Model cross-section. The Higgs boson self-coupling (κλ = λHHH=λSMHHH) is constrained at 95% confidence level to -8:2 < κλ < 13:2. For resonant Higgs boson pair production through X → HH → γγbb, the limit is presented, using the narrow-width approximation, as a function of mX in the range 260 GeV < mX < 1000 GeV. The observed limits range from 1.1 pb to 0.12 pb over this mass range. 2024-10-09T11:24:02Z 2024-10-09T11:24:02Z 2018-11-07 journal article The ATLAS collaboration., Aaboud, M., Aad, G. et al. Search for Higgs boson pair production in the γγbb final state with 13TeV pp collision data collected by the ATLAS experiment. J. High Energ. Phys. 2018, 40 (2018). https://doi.org/10.1007/JHEP11(2018)040 https://hdl.handle.net/10481/95753 10.1007/JHEP11(2018)040 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional Springer Nature