cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.127924.v1/t10
title: "Table 10" of "Measurement of electroweak $Z(\nu\bar{\nu})\gamma jj$ production and limits on anomalous quartic gauge couplings in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Fitted POI values for this analysis, the previous ATLAS analysis, and their combination. The first and second columns present the values obtained in the individual analyses. The third column presents the values obtained in the combination.
description: CERN-LHC.
 The production of electroweak $Z(\nu\bar{\nu})\gamma$ in association with two jets is studied in a regime with a high transverse momentum photon above 150 GeV using proton-proton collisions at centre-of-mass energy of 13 TeV at the Large Hadron Collider. The analysis uses a data sample with an integrated luminosity of 139 fb$^{-1}$ collected by the ATLAS detector during the 2015-2018 LHC data taking. This process is an important probe of the electroweak symmetry breaking mechanism in the Standard Model and is sensitive to quartic gauge boson couplings via vector-boson scattering. The fiducial $Z(\nu\bar{\nu})\gamma jj$ cross section for the electroweak production is measured to be 0.75$^{+0.32}_{-0.28}$ fb and is consistent with the Standard Model prediction. Evidence for the electroweak $Z(\nu\bar{\nu})\gamma jj$ production is found with a significance of 3.2$\sigma$ in the background-only hypothesis, compared with an expected significance of 3.7$\sigma$. Combining this result with the previously published ATLAS observation of electroweak $Z(\nu\bar{\nu})\gamma jj$ production yields in an observed (expected) signal significance of 6.3$\sigma$ (6.6$\sigma$). Limits on anomalous quartic gauge boson couplings are obtained in the framework of Effective Field Theory with dimension-eight operators.


The extended fiducial region is defined as:
 - $p_{T}^{\nu\bar{\nu}} &gt;$ 120 GeV
 - $N_{phot}$ = 1
 - $p_{T}^{\gamma} &gt;$ 150 GeV 
 - $|\eta^{\gamma}| &lt;$ 2.37
 - $N_{jets} \geq 2$ 
 - $p_{T}^{jet} &gt;$ 50 GeV
 - $|\eta^{jet}| &lt;$ 4.5
 - $\Delta R(jet,\gamma) &gt;$ 0.3
 - $\Delta\phi(\gamma,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.4
 - $\Delta\phi(\jet,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.3
 - $m_{jj}&gt;$300 GeV
 - $\gamma$-centrality&lt;0.6.
DOI: 10.17182/hepdata.127924.v1/t11
title: "Table 11" of "Measurement of electroweak $Z(\nu\bar{\nu})\gamma jj$ production and limits on anomalous quartic gauge couplings in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Observed and expected one-dimensional limits on dimension 8 aQGC parameters. Limits are obtained by setting all aQGCs parameters except one to zero. Unitarity is not preserved.
description: CERN-LHC.
 The production of electroweak $Z(\nu\bar{\nu})\gamma$ in association with two jets is studied in a regime with a high transverse momentum photon above 150 GeV using proton-proton collisions at centre-of-mass energy of 13 TeV at the Large Hadron Collider. The analysis uses a data sample with an integrated luminosity of 139 fb$^{-1}$ collected by the ATLAS detector during the 2015-2018 LHC data taking. This process is an important probe of the electroweak symmetry breaking mechanism in the Standard Model and is sensitive to quartic gauge boson couplings via vector-boson scattering. The fiducial $Z(\nu\bar{\nu})\gamma jj$ cross section for the electroweak production is measured to be 0.75$^{+0.32}_{-0.28}$ fb and is consistent with the Standard Model prediction. Evidence for the electroweak $Z(\nu\bar{\nu})\gamma jj$ production is found with a significance of 3.2$\sigma$ in the background-only hypothesis, compared with an expected significance of 3.7$\sigma$. Combining this result with the previously published ATLAS observation of electroweak $Z(\nu\bar{\nu})\gamma jj$ production yields in an observed (expected) signal significance of 6.3$\sigma$ (6.6$\sigma$). Limits on anomalous quartic gauge boson couplings are obtained in the framework of Effective Field Theory with dimension-eight operators.


The extended fiducial region is defined as:
 - $p_{T}^{\nu\bar{\nu}} &gt;$ 120 GeV
 - $N_{phot}$ = 1
 - $p_{T}^{\gamma} &gt;$ 150 GeV 
 - $|\eta^{\gamma}| &lt;$ 2.37
 - $N_{jets} \geq 2$ 
 - $p_{T}^{jet} &gt;$ 50 GeV
 - $|\eta^{jet}| &lt;$ 4.5
 - $\Delta R(jet,\gamma) &gt;$ 0.3
 - $\Delta\phi(\gamma,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.4
 - $\Delta\phi(\jet,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.3
 - $m_{jj}&gt;$300 GeV
 - $\gamma$-centrality&lt;0.6.
DOI: 10.17182/hepdata.127924.v1/t12
title: "Table 12" of "Measurement of electroweak $Z(\nu\bar{\nu})\gamma jj$ production and limits on anomalous quartic gauge couplings in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Observed and expected one-dimensional limits on dimension 8 aQGC parameters in the region, where unitarity is preserved. Cutoff scales in MC, $E_{c}$, are given for each parameter. Limits are obtained by setting all aQGCs parameters except one to zero.
description: CERN-LHC.
 The production of electroweak $Z(\nu\bar{\nu})\gamma$ in association with two jets is studied in a regime with a high transverse momentum photon above 150 GeV using proton-proton collisions at centre-of-mass energy of 13 TeV at the Large Hadron Collider. The analysis uses a data sample with an integrated luminosity of 139 fb$^{-1}$ collected by the ATLAS detector during the 2015-2018 LHC data taking. This process is an important probe of the electroweak symmetry breaking mechanism in the Standard Model and is sensitive to quartic gauge boson couplings via vector-boson scattering. The fiducial $Z(\nu\bar{\nu})\gamma jj$ cross section for the electroweak production is measured to be 0.75$^{+0.32}_{-0.28}$ fb and is consistent with the Standard Model prediction. Evidence for the electroweak $Z(\nu\bar{\nu})\gamma jj$ production is found with a significance of 3.2$\sigma$ in the background-only hypothesis, compared with an expected significance of 3.7$\sigma$. Combining this result with the previously published ATLAS observation of electroweak $Z(\nu\bar{\nu})\gamma jj$ production yields in an observed (expected) signal significance of 6.3$\sigma$ (6.6$\sigma$). Limits on anomalous quartic gauge boson couplings are obtained in the framework of Effective Field Theory with dimension-eight operators.


The extended fiducial region is defined as:
 - $p_{T}^{\nu\bar{\nu}} &gt;$ 120 GeV
 - $N_{phot}$ = 1
 - $p_{T}^{\gamma} &gt;$ 150 GeV 
 - $|\eta^{\gamma}| &lt;$ 2.37
 - $N_{jets} \geq 2$ 
 - $p_{T}^{jet} &gt;$ 50 GeV
 - $|\eta^{jet}| &lt;$ 4.5
 - $\Delta R(jet,\gamma) &gt;$ 0.3
 - $\Delta\phi(\gamma,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.4
 - $\Delta\phi(\jet,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.3
 - $m_{jj}&gt;$300 GeV
 - $\gamma$-centrality&lt;0.6.
DOI: 10.17182/hepdata.127924.v1/t13
title: "Table 13" of "Measurement of electroweak $Z(\nu\bar{\nu})\gamma jj$ production and limits on anomalous quartic gauge couplings in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: The $E_{T}^{\gamma}$ distribution in the SR after the fit in the control regions. The red (green) line shows the expected number of events in the case of non-zero EFT coefficient $f_{T0}/\Lambda^4$ ($f_{M0}/\Lambda^4$) with the value shown in the legend. The vertical error bars on the data points correspond to the data statistical uncertainty. Overflows are included in the last bin. The uncertainty band corresponds to the combination of the MC statistical uncertainty and systematic uncertainties obtained in the fit.
description: CERN-LHC.
 The production of electroweak $Z(\nu\bar{\nu})\gamma$ in association with two jets is studied in a regime with a high transverse momentum photon above 150 GeV using proton-proton collisions at centre-of-mass energy of 13 TeV at the Large Hadron Collider. The analysis uses a data sample with an integrated luminosity of 139 fb$^{-1}$ collected by the ATLAS detector during the 2015-2018 LHC data taking. This process is an important probe of the electroweak symmetry breaking mechanism in the Standard Model and is sensitive to quartic gauge boson couplings via vector-boson scattering. The fiducial $Z(\nu\bar{\nu})\gamma jj$ cross section for the electroweak production is measured to be 0.75$^{+0.32}_{-0.28}$ fb and is consistent with the Standard Model prediction. Evidence for the electroweak $Z(\nu\bar{\nu})\gamma jj$ production is found with a significance of 3.2$\sigma$ in the background-only hypothesis, compared with an expected significance of 3.7$\sigma$. Combining this result with the previously published ATLAS observation of electroweak $Z(\nu\bar{\nu})\gamma jj$ production yields in an observed (expected) signal significance of 6.3$\sigma$ (6.6$\sigma$). Limits on anomalous quartic gauge boson couplings are obtained in the framework of Effective Field Theory with dimension-eight operators.


The extended fiducial region is defined as:
 - $p_{T}^{\nu\bar{\nu}} &gt;$ 120 GeV
 - $N_{phot}$ = 1
 - $p_{T}^{\gamma} &gt;$ 150 GeV 
 - $|\eta^{\gamma}| &lt;$ 2.37
 - $N_{jets} \geq 2$ 
 - $p_{T}^{jet} &gt;$ 50 GeV
 - $|\eta^{jet}| &lt;$ 4.5
 - $\Delta R(jet,\gamma) &gt;$ 0.3
 - $\Delta\phi(\gamma,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.4
 - $\Delta\phi(\jet,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.3
 - $m_{jj}&gt;$300 GeV
 - $\gamma$-centrality&lt;0.6.
DOI: 10.17182/hepdata.127924.v1/t14
title: "Table 14" of "Measurement of electroweak $Z(\nu\bar{\nu})\gamma jj$ production and limits on anomalous quartic gauge couplings in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Evolution of the expected (red line) and observed (blue line) limits versus $E_{c}$ values for $f_{T0}/\Lambda^4$. The unitarity bound is shown by the black line. The $E_{c}&lt;4$ TeV regime was obtained with $E_{T}^{\gamma} &gt; 600$ GeV. The $E_{c} \geq 4$ TeV regime was obtained with $E_{T}^{\gamma} &gt; 900$ GeV.
description: CERN-LHC.
 The production of electroweak $Z(\nu\bar{\nu})\gamma$ in association with two jets is studied in a regime with a high transverse momentum photon above 150 GeV using proton-proton collisions at centre-of-mass energy of 13 TeV at the Large Hadron Collider. The analysis uses a data sample with an integrated luminosity of 139 fb$^{-1}$ collected by the ATLAS detector during the 2015-2018 LHC data taking. This process is an important probe of the electroweak symmetry breaking mechanism in the Standard Model and is sensitive to quartic gauge boson couplings via vector-boson scattering. The fiducial $Z(\nu\bar{\nu})\gamma jj$ cross section for the electroweak production is measured to be 0.75$^{+0.32}_{-0.28}$ fb and is consistent with the Standard Model prediction. Evidence for the electroweak $Z(\nu\bar{\nu})\gamma jj$ production is found with a significance of 3.2$\sigma$ in the background-only hypothesis, compared with an expected significance of 3.7$\sigma$. Combining this result with the previously published ATLAS observation of electroweak $Z(\nu\bar{\nu})\gamma jj$ production yields in an observed (expected) signal significance of 6.3$\sigma$ (6.6$\sigma$). Limits on anomalous quartic gauge boson couplings are obtained in the framework of Effective Field Theory with dimension-eight operators.


The extended fiducial region is defined as:
 - $p_{T}^{\nu\bar{\nu}} &gt;$ 120 GeV
 - $N_{phot}$ = 1
 - $p_{T}^{\gamma} &gt;$ 150 GeV 
 - $|\eta^{\gamma}| &lt;$ 2.37
 - $N_{jets} \geq 2$ 
 - $p_{T}^{jet} &gt;$ 50 GeV
 - $|\eta^{jet}| &lt;$ 4.5
 - $\Delta R(jet,\gamma) &gt;$ 0.3
 - $\Delta\phi(\gamma,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.4
 - $\Delta\phi(\jet,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.3
 - $m_{jj}&gt;$300 GeV
 - $\gamma$-centrality&lt;0.6.
DOI: 10.17182/hepdata.127924.v1/t15
title: "Table 15" of "Measurement of electroweak $Z(\nu\bar{\nu})\gamma jj$ production and limits on anomalous quartic gauge couplings in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Evolution of the expected (red line) and observed (blue line) limits versus $E_{c}$ values for $f_{T5}/\Lambda^4$. The unitarity bound is shown by the black line. The $E_{c}&lt;4$ TeV regime was obtained with $E_{T}^{\gamma} &gt; 600$ GeV. The $E_{c} \geq 4$ TeV regime was obtained with $E_{T}^{\gamma} &gt; 900$ GeV.
description: CERN-LHC.
 The production of electroweak $Z(\nu\bar{\nu})\gamma$ in association with two jets is studied in a regime with a high transverse momentum photon above 150 GeV using proton-proton collisions at centre-of-mass energy of 13 TeV at the Large Hadron Collider. The analysis uses a data sample with an integrated luminosity of 139 fb$^{-1}$ collected by the ATLAS detector during the 2015-2018 LHC data taking. This process is an important probe of the electroweak symmetry breaking mechanism in the Standard Model and is sensitive to quartic gauge boson couplings via vector-boson scattering. The fiducial $Z(\nu\bar{\nu})\gamma jj$ cross section for the electroweak production is measured to be 0.75$^{+0.32}_{-0.28}$ fb and is consistent with the Standard Model prediction. Evidence for the electroweak $Z(\nu\bar{\nu})\gamma jj$ production is found with a significance of 3.2$\sigma$ in the background-only hypothesis, compared with an expected significance of 3.7$\sigma$. Combining this result with the previously published ATLAS observation of electroweak $Z(\nu\bar{\nu})\gamma jj$ production yields in an observed (expected) signal significance of 6.3$\sigma$ (6.6$\sigma$). Limits on anomalous quartic gauge boson couplings are obtained in the framework of Effective Field Theory with dimension-eight operators.


The extended fiducial region is defined as:
 - $p_{T}^{\nu\bar{\nu}} &gt;$ 120 GeV
 - $N_{phot}$ = 1
 - $p_{T}^{\gamma} &gt;$ 150 GeV 
 - $|\eta^{\gamma}| &lt;$ 2.37
 - $N_{jets} \geq 2$ 
 - $p_{T}^{jet} &gt;$ 50 GeV
 - $|\eta^{jet}| &lt;$ 4.5
 - $\Delta R(jet,\gamma) &gt;$ 0.3
 - $\Delta\phi(\gamma,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.4
 - $\Delta\phi(\jet,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.3
 - $m_{jj}&gt;$300 GeV
 - $\gamma$-centrality&lt;0.6.
DOI: 10.17182/hepdata.127924.v1/t16
title: "Table 16" of "Measurement of electroweak $Z(\nu\bar{\nu})\gamma jj$ production and limits on anomalous quartic gauge couplings in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Evolution of the expected (red line) and observed (blue line) limits versus $E_{c}$ values for $f_{T8}/\Lambda^4$. The unitarity bound is shown by the black line. The $E_{c}&lt;4$ TeV regime was obtained with $E_{T}^{\gamma} &gt; 600$ GeV. The $E_{c} \geq 4$ TeV regime was obtained with $E_{T}^{\gamma} &gt; 900$ GeV.
description: CERN-LHC.
 The production of electroweak $Z(\nu\bar{\nu})\gamma$ in association with two jets is studied in a regime with a high transverse momentum photon above 150 GeV using proton-proton collisions at centre-of-mass energy of 13 TeV at the Large Hadron Collider. The analysis uses a data sample with an integrated luminosity of 139 fb$^{-1}$ collected by the ATLAS detector during the 2015-2018 LHC data taking. This process is an important probe of the electroweak symmetry breaking mechanism in the Standard Model and is sensitive to quartic gauge boson couplings via vector-boson scattering. The fiducial $Z(\nu\bar{\nu})\gamma jj$ cross section for the electroweak production is measured to be 0.75$^{+0.32}_{-0.28}$ fb and is consistent with the Standard Model prediction. Evidence for the electroweak $Z(\nu\bar{\nu})\gamma jj$ production is found with a significance of 3.2$\sigma$ in the background-only hypothesis, compared with an expected significance of 3.7$\sigma$. Combining this result with the previously published ATLAS observation of electroweak $Z(\nu\bar{\nu})\gamma jj$ production yields in an observed (expected) signal significance of 6.3$\sigma$ (6.6$\sigma$). Limits on anomalous quartic gauge boson couplings are obtained in the framework of Effective Field Theory with dimension-eight operators.


The extended fiducial region is defined as:
 - $p_{T}^{\nu\bar{\nu}} &gt;$ 120 GeV
 - $N_{phot}$ = 1
 - $p_{T}^{\gamma} &gt;$ 150 GeV 
 - $|\eta^{\gamma}| &lt;$ 2.37
 - $N_{jets} \geq 2$ 
 - $p_{T}^{jet} &gt;$ 50 GeV
 - $|\eta^{jet}| &lt;$ 4.5
 - $\Delta R(jet,\gamma) &gt;$ 0.3
 - $\Delta\phi(\gamma,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.4
 - $\Delta\phi(\jet,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.3
 - $m_{jj}&gt;$300 GeV
 - $\gamma$-centrality&lt;0.6.
DOI: 10.17182/hepdata.127924.v1/t17
title: "Table 17" of "Measurement of electroweak $Z(\nu\bar{\nu})\gamma jj$ production and limits on anomalous quartic gauge couplings in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Evolution of the expected (red line) and observed (blue line) limits versus $E_{c}$ values for $f_{T9}/\Lambda^4$. The unitarity bound is shown by the black line. The $E_{c}&lt;4$ TeV regime was obtained with $E_{T}^{\gamma} &gt; 600$ GeV. The $E_{c} \geq 4$ TeV regime was obtained with $E_{T}^{\gamma} &gt; 900$ GeV.
description: CERN-LHC.
 The production of electroweak $Z(\nu\bar{\nu})\gamma$ in association with two jets is studied in a regime with a high transverse momentum photon above 150 GeV using proton-proton collisions at centre-of-mass energy of 13 TeV at the Large Hadron Collider. The analysis uses a data sample with an integrated luminosity of 139 fb$^{-1}$ collected by the ATLAS detector during the 2015-2018 LHC data taking. This process is an important probe of the electroweak symmetry breaking mechanism in the Standard Model and is sensitive to quartic gauge boson couplings via vector-boson scattering. The fiducial $Z(\nu\bar{\nu})\gamma jj$ cross section for the electroweak production is measured to be 0.75$^{+0.32}_{-0.28}$ fb and is consistent with the Standard Model prediction. Evidence for the electroweak $Z(\nu\bar{\nu})\gamma jj$ production is found with a significance of 3.2$\sigma$ in the background-only hypothesis, compared with an expected significance of 3.7$\sigma$. Combining this result with the previously published ATLAS observation of electroweak $Z(\nu\bar{\nu})\gamma jj$ production yields in an observed (expected) signal significance of 6.3$\sigma$ (6.6$\sigma$). Limits on anomalous quartic gauge boson couplings are obtained in the framework of Effective Field Theory with dimension-eight operators.


The extended fiducial region is defined as:
 - $p_{T}^{\nu\bar{\nu}} &gt;$ 120 GeV
 - $N_{phot}$ = 1
 - $p_{T}^{\gamma} &gt;$ 150 GeV 
 - $|\eta^{\gamma}| &lt;$ 2.37
 - $N_{jets} \geq 2$ 
 - $p_{T}^{jet} &gt;$ 50 GeV
 - $|\eta^{jet}| &lt;$ 4.5
 - $\Delta R(jet,\gamma) &gt;$ 0.3
 - $\Delta\phi(\gamma,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.4
 - $\Delta\phi(\jet,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.3
 - $m_{jj}&gt;$300 GeV
 - $\gamma$-centrality&lt;0.6.
DOI: 10.17182/hepdata.127924.v1/t18
title: "Table 18" of "Measurement of electroweak $Z(\nu\bar{\nu})\gamma jj$ production and limits on anomalous quartic gauge couplings in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Evolution of the expected (red line) and observed (blue line) limits versus $E_{c}$ values for $f_{M0}/\Lambda^4$. The unitarity bound is shown by the black line. The $E_{c}&lt;4$ TeV regime was obtained with $E_{T}^{\gamma} &gt; 400$ GeV. The $E_{c} \geq 4$ TeV regime was obtained with $E_{T}^{\gamma} &gt; 900$ GeV.
description: CERN-LHC.
 The production of electroweak $Z(\nu\bar{\nu})\gamma$ in association with two jets is studied in a regime with a high transverse momentum photon above 150 GeV using proton-proton collisions at centre-of-mass energy of 13 TeV at the Large Hadron Collider. The analysis uses a data sample with an integrated luminosity of 139 fb$^{-1}$ collected by the ATLAS detector during the 2015-2018 LHC data taking. This process is an important probe of the electroweak symmetry breaking mechanism in the Standard Model and is sensitive to quartic gauge boson couplings via vector-boson scattering. The fiducial $Z(\nu\bar{\nu})\gamma jj$ cross section for the electroweak production is measured to be 0.75$^{+0.32}_{-0.28}$ fb and is consistent with the Standard Model prediction. Evidence for the electroweak $Z(\nu\bar{\nu})\gamma jj$ production is found with a significance of 3.2$\sigma$ in the background-only hypothesis, compared with an expected significance of 3.7$\sigma$. Combining this result with the previously published ATLAS observation of electroweak $Z(\nu\bar{\nu})\gamma jj$ production yields in an observed (expected) signal significance of 6.3$\sigma$ (6.6$\sigma$). Limits on anomalous quartic gauge boson couplings are obtained in the framework of Effective Field Theory with dimension-eight operators.


The extended fiducial region is defined as:
 - $p_{T}^{\nu\bar{\nu}} &gt;$ 120 GeV
 - $N_{phot}$ = 1
 - $p_{T}^{\gamma} &gt;$ 150 GeV 
 - $|\eta^{\gamma}| &lt;$ 2.37
 - $N_{jets} \geq 2$ 
 - $p_{T}^{jet} &gt;$ 50 GeV
 - $|\eta^{jet}| &lt;$ 4.5
 - $\Delta R(jet,\gamma) &gt;$ 0.3
 - $\Delta\phi(\gamma,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.4
 - $\Delta\phi(\jet,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.3
 - $m_{jj}&gt;$300 GeV
 - $\gamma$-centrality&lt;0.6.
DOI: 10.17182/hepdata.127924.v1/t19
title: "Table 19" of "Measurement of electroweak $Z(\nu\bar{\nu})\gamma jj$ production and limits on anomalous quartic gauge couplings in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Evolution of the expected (red line) and observed (blue line) limits versus $E_{c}$ values for $f_{M1}/\Lambda^4$. The unitarity bound is shown by the black line. The $E_{c}&lt;4$ TeV regime was obtained with $E_{T}^{\gamma} &gt; 400$ GeV. The $E_{c} \geq 4$ TeV regime was obtained with $E_{T}^{\gamma} &gt; 900$ GeV.
description: CERN-LHC.
 The production of electroweak $Z(\nu\bar{\nu})\gamma$ in association with two jets is studied in a regime with a high transverse momentum photon above 150 GeV using proton-proton collisions at centre-of-mass energy of 13 TeV at the Large Hadron Collider. The analysis uses a data sample with an integrated luminosity of 139 fb$^{-1}$ collected by the ATLAS detector during the 2015-2018 LHC data taking. This process is an important probe of the electroweak symmetry breaking mechanism in the Standard Model and is sensitive to quartic gauge boson couplings via vector-boson scattering. The fiducial $Z(\nu\bar{\nu})\gamma jj$ cross section for the electroweak production is measured to be 0.75$^{+0.32}_{-0.28}$ fb and is consistent with the Standard Model prediction. Evidence for the electroweak $Z(\nu\bar{\nu})\gamma jj$ production is found with a significance of 3.2$\sigma$ in the background-only hypothesis, compared with an expected significance of 3.7$\sigma$. Combining this result with the previously published ATLAS observation of electroweak $Z(\nu\bar{\nu})\gamma jj$ production yields in an observed (expected) signal significance of 6.3$\sigma$ (6.6$\sigma$). Limits on anomalous quartic gauge boson couplings are obtained in the framework of Effective Field Theory with dimension-eight operators.


The extended fiducial region is defined as:
 - $p_{T}^{\nu\bar{\nu}} &gt;$ 120 GeV
 - $N_{phot}$ = 1
 - $p_{T}^{\gamma} &gt;$ 150 GeV 
 - $|\eta^{\gamma}| &lt;$ 2.37
 - $N_{jets} \geq 2$ 
 - $p_{T}^{jet} &gt;$ 50 GeV
 - $|\eta^{jet}| &lt;$ 4.5
 - $\Delta R(jet,\gamma) &gt;$ 0.3
 - $\Delta\phi(\gamma,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.4
 - $\Delta\phi(\jet,$p_{T}^{\nu\bar{\nu}})&gt;$ 0.3
 - $m_{jj}&gt;$300 GeV
 - $\gamma$-centrality&lt;0.6.