{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.78400.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1610451"}},{"@id":"https://doi.org/10.1140/epjc/s10052-017-5180-3","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ATLAS Collaboration"},"creator":{"@type":"Organization","name":"ATLAS Collaboration"},"datePublished":"2017","description":"CERN-LHC. This paper presents a study of $WW\\gamma$ and $WZ\\gamma$ triboson production using events from proton--proton collisions at a centre-of-mass energy of $\\sqrt{s} = 8$ TeV recorded with the ATLAS detector at the LHC and corresponding to an integrated luminosity of 20.2 fb$^{-1}$. The $WW\\gamma$ production cross-section is determined using a final state containing an electron, a muon, a photon, and neutrinos ($e\\nu\\mu\\nu\\gamma$). Upper limits on the production cross-section of the $e\\nu\\mu\\nu\\gamma$ final state and the $WW\\gamma$ and $WZ\\gamma$ final states containing an electron or a muon, two jets, a photon, and a neutrino ($e\\nu jj\\gamma$ or $\\mu\\nu jj\\gamma$) are also derived. The results are compared to the cross-sections predicted by the Standard Model at next-to-leading order in the strong-coupling constant. In addition, upper limits on the production cross-sections are derived in a fiducial region optimised for a search for new physics beyond the Standard Model. The results are interpreted in the context of anomalous quartic gauge couplings using an effective field theory. Confidence intervals at 95% confidence level are derived for  the 14 coupling coefficients to which $WW\\gamma$ and $WZ\\gamma$ production are sensitive. \n\nThe $e\\nu\\mu\\nu\\gamma$ fiducial phase space region is defined as (Table 3 of the preprint):\n- 1 electron and 1 muon with opposite charge and $p_{\\text{T}}^{\\ell} > \\mbox{20 GeV} $ each\n- no $3^{\\text{rd}}$ lepton ($p_{\\text{T}}^{\\ell} > \\mbox{7 GeV}$)\n- $\\eta^{\\ell} < 2.5$\n- $\\Delta R (\\ell, \\ell^{\\prime}) < 0.1$\n- at least one photon with $E_{\\text{T}}^{\\gamma} > \\mbox{15 GeV}$ and $|\\eta^{\\gamma}| < 2.37$\n- isolation fraction $\\epsilon_{h}^{p} < 0.5$\n- $\\Delta R(\\ell, \\gamma) > 0.5$\n- $E_{\\text{T,rel}}^{\\text{miss}} > \\mbox{15 GeV}$ \n- $m_{e\\mu}> \\mbox{50 GeV}$ \n- $N_{\\text{jets}} = 0$ with $p_{\\text{T}}^{j} > \\mbox{25 GeV}$ and $|y^{j}| < 4.4$ \n- $\\Delta R(\\text{jet}, \\gamma) > 0.5$\n- $\\Delta R(\\text{jet}, \\ell) > 0.3$\n\nThe $\\ell\\nu jj\\gamma$ fiducial phase space region with $\\ell = e \\text{ or }\\mu$  is defined as (Table 3 of the preprint):\n- 1 electron or 1 muon with $p_{\\text{T}}^{\\ell} > \\mbox{25 GeV}$ and $|\\eta^{\\ell}| < 2.5$ \n- no $2^{\\text{nd}}$ lepton ($p_{\\text{T}}^{\\ell} > \\mbox{7 GeV}$)\n- at least one photon with $E_{\\text{T}}^{\\gamma} > \\mbox{15 GeV}$ and $|\\eta^{\\gamma}| < 2.37$\n- isolation fraction $\\epsilon_{h}^{p} < 0.5$\n- $\\Delta R(\\ell, \\gamma) > 0.5$\n- $E_{\\text{T}}^{\\text{miss}} > \\mbox{30 GeV}$ \n- $m_{\\text{T}} > \\mbox{30 GeV}$\n- at least two jets with  $p_{\\text{T}}^{j} > \\mbox{25 GeV}$ and $|\\eta^{j}| < 2.5 $\n- $N_{\\text{$b$-jets}} = 0$\n- $|\\Delta \\eta_{jj}| < 1.2$\n- $\\Delta R_{jj} < 3.0$ \n- $\\mbox{70 GeV} < m_{jj} < \\mbox{100 GeV}$\n- $\\Delta R(\\text{jet}, \\gamma) > 0.5$\n- $\\Delta R(\\text{jet}, \\ell) > 0.3$","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.78400.v1/t1","@type":"Dataset","description":"Computed fiducial cross section in the $e\\nu\\mu\\nu\\gamma$ channel. The first uncertainty shown is the statistical uncertainty and the second one...","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.78400.v1/t2","@type":"Dataset","description":"Observed and expected cross-section upper limits at 95\\% CL for the different final states using the CL$_{\\text{s}}$ method. The expected...","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.78400.v1/t3","@type":"Dataset","description":"Observed and expected cross-section upper limits at 95\\% CL using the CL$_{\\text{s}}$ method for the different final states with the...","name":"Table 3"},{"@id":"https://doi.org/10.17182/hepdata.78400.v1/t4","@type":"Dataset","description":"Observed and expected confidence intervals at 95\\% CL on the different anomalous quartic gauge couplings for the combined $WV\\gamma$ analysis...","name":"Table 4"},{"@id":"https://doi.org/10.17182/hepdata.78400.v1/t5","@type":"Dataset","description":"Observed and expected confidence intervals at 95\\% CL on the different anomalous quartic gauge couplings for the combined $WV\\gamma$ analysis...","name":"Table 5"},{"@id":"https://doi.org/10.17182/hepdata.78400.v1/t6","@type":"Dataset","description":"Observed and expected confidence intervals at 95\\% CL on the different anomalous quartic gauge couplings for the combined $WV\\gamma$ analysis...","name":"Table 6"},{"@id":"https://doi.org/10.17182/hepdata.78400.v1/t7","@type":"Dataset","description":"Numbers of observed events and predicted background events for the different final states in the nominal phase space. Also given...","name":"Table 7"},{"@id":"https://doi.org/10.17182/hepdata.78400.v1/t8","@type":"Dataset","description":"Numbers of observed events and predicted background events for the different final states with the respective photon \\et threshold optimised...","name":"Table 8"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1610451?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/78400"}],"inLanguage":"en","name":"Study of $WW\\gamma$ and $WZ\\gamma$ production in $pp$ collisions at $\\sqrt{s} = 8$ TeV and search for anomalous quartic gauge couplings with the ATLAS experiment","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1610451?version=1","version":1}