{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.160696.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/2943676"}},{"@id":"https://doi.org/10.1016/j.physletb.2026.140280","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ATLAS Collaboration"},"creator":{"@type":"Organization","name":"ATLAS Collaboration"},"datePublished":"2025","description":"A search for Higgs boson pair production in the $b \\overline{b} \\gamma \\gamma$ final state is performed. The proton-proton collision dataset in this analysis corresponds to an integrated luminosity of 308 fb$^{-1}$, consisting of two samples, with 140 fb$^{-1}$ at a centre-of-mass energy of 13 TeV and 168 fb$^{-1}$ at 13.6 TeV, recorded between 2015 and 2024 by the ATLAS detector at the CERN Large Hadron Collider. Compared to the result of a previous search in the same final state, in addition to the increased dataset, the analysis incorporates several methodological and technical improvements. The Higgs boson pair production cross section divided by the Standard Model prediction is found to be  $\\mu_{HH} = 0.9^{+1.4}_{-1.1}$ ($\\mu_{HH} = 1^{+1.3}_{-1.0}$ expected), which translates into a 95% confidence-level upper limit of $\\mu_{HH}<3.8$. At the same confidence level the Higgs self-coupling modifier is constrained to be in the range $-1.7 < \\kappa_\\lambda < 6.6$  ($-1.8 < \\kappa_\\lambda < 6.9$ expected).","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t1","@type":"Dataset","description":"Weighted di-photon invariant mass distribution summed over all categories and the two data-taking periods. The events in each category are...","name":"Table 1 (Weighted di-photon invariant mass distribution)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t2","@type":"Dataset","description":"Weighted di-photon invariant mass distribution summed over all categories and the two data-taking periods. The events in each category are...","name":"Table 2 (Weighted di-photon invariant mass distribution - data)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t3","@type":"Dataset","description":"The 95% CL upper limits on the signal strength, obtained with separate fits to Run-2 and Run-3 data as well...","name":"Table 3 (The 95% CL upper limits on the signal strength)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t4","@type":"Dataset","description":"Observed profile likelihood scans of $\\kappa_\\lambda$. The scans are performed by varying only the coupling modifier of interest, while all...","name":"Table 4 ($\\kappa_{\\lambda}$ obs)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t5","@type":"Dataset","description":"Expected profile likelihood scans of $\\kappa_\\lambda$. The scans are performed by varying only the coupling modifier of interest, while all...","name":"Table 5 ($\\kappa_{\\lambda}$ exp)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t6","@type":"Dataset","description":"Observed profile likelihood scans of $\\kappa_{2V}$. The scans are performed by varying only the coupling modifier of interest, while all...","name":"Table 6 ($\\kappa_{2V}$ obs)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t7","@type":"Dataset","description":"Expected profile likelihood scans of $\\kappa_{2V}$. The scans are performed by varying only the coupling modifier of interest, while all...","name":"Table 7 ($\\kappa_{2V}$ exp)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t8","@type":"Dataset","description":"Confidence level contours at 68% (solid line) and 95% (dashed line) in the $(\\kappa_\\lambda, \\kappa_{2V})$ parameter space, when all other...","name":"Table 8 ($\\kappa_{\\lambda}$ vs $\\kappa_{2V}$ obs)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t9","@type":"Dataset","description":"Confidence level contours at 68% (solid line) and 95% (dashed line) in the $(\\kappa_\\lambda, \\kappa_{2V})$ parameter space, when all other...","name":"Table 9 ($\\kappa_{\\lambda}$ vs $\\kappa_{2V}$ exp)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t10","@type":"Dataset","description":"Observed $m_{\\gamma\\gamma}$ distributions for the high-mass categories in Run 2. The lines show the fit results for the continuum background...","name":"Table 10 (Weighted di-photon invariant mass distribution)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t11","@type":"Dataset","description":"Observed $m_{\\gamma\\gamma}$ distributions for the high-mass categories in Run 3. The lines show the fit results for the continuum background...","name":"Table 11 (Weighted di-photon invariant mass distribution)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t12","@type":"Dataset","description":"Observed $m_{\\gamma\\gamma}$ distributions for the high-mass categories in Run 2. The lines show the fit results for the continuum background...","name":"Table 12 (Weighted di-photon invariant mass distribution)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t13","@type":"Dataset","description":"Observed $m_{\\gamma\\gamma}$ distributions for the high-mass categories in Run 3. The lines show the fit results for the continuum background...","name":"Table 13 (Weighted di-photon invariant mass distribution)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t14","@type":"Dataset","description":"Observed $m_{\\gamma\\gamma}$ distributions for the high-mass categories in Run 2. 3he lines show the fit results for the continuum background...","name":"Table 14 (Weighted di-photon invariant mass distribution)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t15","@type":"Dataset","description":"Observed $m_{\\gamma\\gamma}$ distributions for the high-mass categories in Run 3. The lines show the fit results for the continuum background...","name":"Table 15 (Weighted di-photon invariant mass distribution)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t16","@type":"Dataset","description":"Observed $m_{\\gamma\\gamma}$ distributions for the low-mass categories in Run 2. The lines show the fit results for the continuum background...","name":"Table 16 (Weighted di-photon invariant mass distribution)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t17","@type":"Dataset","description":"Observed $m_{\\gamma\\gamma}$ distributions for the low-mass categories in Run 3. The lines show the fit results for the continuum background...","name":"Table 17 (Weighted di-photon invariant mass distribution)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t18","@type":"Dataset","description":"Observed $m_{\\gamma\\gamma}$ distributions for the low-mass categories in Run 2. The lines show the fit results for the continuum background...","name":"Table 18 (Weighted di-photon invariant mass distribution)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t19","@type":"Dataset","description":"Observed $m_{\\gamma\\gamma}$ distributions for the low-mass categories in Run 3. The lines show the fit results for the continuum background...","name":"Table 19 (Weighted di-photon invariant mass distribution)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t20","@type":"Dataset","description":"Observed $m_{\\gamma\\gamma}$ distributions for the low-mass categories in Run 2. The lines show the fit results for the continuum background...","name":"Table 20 (Weighted di-photon invariant mass distribution)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t21","@type":"Dataset","description":"Observed $m_{\\gamma\\gamma}$ distributions for the low-mass categories in Run 3. The lines show the fit results for the continuum background...","name":"Table 21 (Weighted di-photon invariant mass distribution)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t22","@type":"Dataset","description":"Observed $m_{\\gamma\\gamma}$ distributions for the low-mass categories in Run 2. The lines show the fit results for the continuum background...","name":"Table 22 (Weighted di-photon invariant mass distribution)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t23","@type":"Dataset","description":"Observed $m_{\\gamma\\gamma}$ distributions for the low-mass categories in Run 3. The lines show the fit results for the continuum background...","name":"Table 23 (Weighted di-photon invariant mass distribution)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t24","@type":"Dataset","description":"Observed and expected profiled likelihood scans on $\\kappa_\\lambda$ for the low-mass (LM) and high-mass (HM) regions separately and for their...","name":"Table 24 ($\\kappa_{\\lambda}$ obs aux)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t25","@type":"Dataset","description":"Observed and expected profiled likelihood scans on $\\kappa_\\lambda$ for the low-mass (LM) and high-mass (HM) regions separately and for their...","name":"Table 25 ($\\kappa_{\\lambda}$ exp aux)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t26","@type":"Dataset","description":"Observed and expected profiled likelihood scans on $\\kappa_\\lambda$ for the low-mass (LM) and high-mass (HM) regions separately and for their...","name":"Table 26 ($\\kappa_{\\lambda}$ obs aux)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t27","@type":"Dataset","description":"Observed and expected profiled likelihood scans on $\\kappa_\\lambda$ for the low-mass (LM) and high-mass (HM) regions separately and for their...","name":"Table 27 ($\\kappa_{\\lambda}$ exp aux)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t28","@type":"Dataset","description":"Observed and expected profiled likelihood scans on $\\kappa_\\lambda$ for the low-mass (LM) and high-mass (HM) regions separately and for their...","name":"Table 28 ($\\kappa_{\\lambda}$ obs aux)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t29","@type":"Dataset","description":"Observed and expected profiled likelihood scans on $\\kappa_\\lambda$ for the low-mass (LM) and high-mass (HM) regions separately and for their...","name":"Table 29 ($\\kappa_{\\lambda}$ exp aux)"},{"@id":"https://doi.org/10.17182/hepdata.160696.v1/t30","@type":"Dataset","description":"The expected number of events (estimated by using simulation) from the SM HH signals and single Higgs boson production, and...","name":"Table 30"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins2943676?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/160696"}],"inLanguage":"en","name":"Study of Higgs boson pair production in the $HH \\rightarrow b \\overline{b} \\gamma\\gamma$ final state with 308 fb$^{-1}$ of data collected at $\\sqrt{s} = 13$ TeV and 13.6 TeV by the ATLAS experiment","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins2943676?version=1","version":1}