DOI: 10.17182/hepdata.78400.v1/t1
title: "Table 1" of "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"

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 is the total systematic uncertainty including the uncertainty due to the luminosity. The theoretical prediction is determined with the VBFNLO generator and its uncertainty does not account for an uncertainty related to the scale introduced by restricting the jet multiplicity in the fully leptonic channel.
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. 

The $e\nu\mu\nu\gamma$ fiducial phase space region is defined as (Table 3 of the preprint):
- 1 electron and 1 muon with opposite charge and $p_{\text{T}}^{\ell} &gt; \mbox{20 GeV} $ each
- no $3^{\text{rd}}$ lepton ($p_{\text{T}}^{\ell} &gt; \mbox{7 GeV}$)
- $\eta^{\ell} &lt; 2.5$
- $\Delta R (\ell, \ell^{\prime}) &lt; 0.1$
- at least one photon with $E_{\text{T}}^{\gamma} &gt; \mbox{15 GeV}$ and $|\eta^{\gamma}| &lt; 2.37$
- isolation fraction $\epsilon_{h}^{p} &lt; 0.5$
- $\Delta R(\ell, \gamma) &gt; 0.5$
- $E_{\text{T,rel}}^{\text{miss}} &gt; \mbox{15 GeV}$ 
- $m_{e\mu}&gt; \mbox{50 GeV}$ 
- $N_{\text{jets}} = 0$ with $p_{\text{T}}^{j} &gt; \mbox{25 GeV}$ and $|y^{j}| &lt; 4.4$ 
- $\Delta R(\text{jet}, \gamma) &gt; 0.5$
- $\Delta R(\text{jet}, \ell) &gt; 0.3$

The $\ell\nu jj\gamma$ fiducial phase space region with $\ell = e \text{ or }\mu$ is defined as (Table 3 of the preprint):
- 1 electron or 1 muon with $p_{\text{T}}^{\ell} &gt; \mbox{25 GeV}$ and $|\eta^{\ell}| &lt; 2.5$ 
- no $2^{\text{nd}}$ lepton ($p_{\text{T}}^{\ell} &gt; \mbox{7 GeV}$)
- at least one photon with $E_{\text{T}}^{\gamma} &gt; \mbox{15 GeV}$ and $|\eta^{\gamma}| &lt; 2.37$
- isolation fraction $\epsilon_{h}^{p} &lt; 0.5$
- $\Delta R(\ell, \gamma) &gt; 0.5$
- $E_{\text{T}}^{\text{miss}} &gt; \mbox{30 GeV}$ 
- $m_{\text{T}} &gt; \mbox{30 GeV}$
- at least two jets with $p_{\text{T}}^{j} &gt; \mbox{25 GeV}$ and $|\eta^{j}| &lt; 2.5 $
- $N_{\text{$b$-jets}} = 0$
- $|\Delta \eta_{jj}| &lt; 1.2$
- $\Delta R_{jj} &lt; 3.0$ 
- $\mbox{70 GeV} &lt; m_{jj} &lt; \mbox{100 GeV}$
- $\Delta R(\text{jet}, \gamma) &gt; 0.5$
- $\Delta R(\text{jet}, \ell) &gt; 0.3$