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Search for dark matter and other new phenomena in events with an energetic jet and large missing transverse momentum using the ATLAS detector

The collaboration
No Journal Information, 2017

Abstract (data abstract)
CERN-LHC. Results of a search for new phenomena in final states with an energetic jet and large missing transverse momentum are reported. The search uses proton-proton collision data corresponding to an integrated luminosity of $36.1$ fb$^{-1}$ at a centre-of-mass energy of $13$ TeV collected in 2015 and 2016 with the ATLAS detector at the Large Hadron Collider.Events are required to have at least one jet with a transverse momentum above $250$ GeV and no leptons ($e$ or $\mu$). Several signal regions are considered with increasing requirements on the missing transverse momentum above $250$ GeV.Good agreement is observed between the number of events in data and Standard Model predictions. The results are translated into exclusion limits in models with pair-produced weakly interacting dark-matter candidates, large extra spatial dimensions, and supersymmetric particles in several compressed scenarios.

• #### Table 1

Data from Figure 2a

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The measured $E_{T}^{miss}$ distribution in the W($\rightarrow \mu \nu$)+jets control region, for the $E_{T}^{miss}$ > 250GeV inclusive selection, compared to...

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Data from Figure 2b

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The measured leading jet $p_{T}$ distribution in the W($\rightarrow \mu \nu$)+jets control region, for the $E_{T}^{miss}$ > 250GeV inclusive selection,...

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Data from Figure 2c

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The measured $E_{T}^{miss}$ distribution in the W($\rightarrow e \nu$)+jets control region, for the $E_{T}^{miss}$ > 250GeV inclusive selection, compared to...

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Data from Figure 2d

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The measured leading jet $p_{T}$ distribution in the W($\rightarrow e \nu$)+jets control region, for the $E_{T}^{miss}$ > 250GeV inclusive selection,...

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Data from Figure 2e

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The measured $E_{T}^{miss}$ distribution in the Z/$\gamma ^{*}$($\rightarrow \mu \mu$)+jets control region, for the $E_{T}^{miss}$ > 250GeV inclusive selection, compared...

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Data from Figure 2f

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The measured leading jet $p_{T}$ distribution in the Z/$\gamma ^{*}$($\rightarrow \mu \mu$)+jets control region, for the $E_{T}^{miss}$ > 250GeV inclusive...

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Data from Figure 3a

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The measured $E_{T}^{miss}$ distribution in the top control region, for the $E_{T}^{miss}$ > 250GeV inclusive selection, compared to the background...

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Data from Figure 3b

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The measured leading jet $p_{T}$ distribution in the top control region, for the $E_{T}^{miss}$ > 250GeV inclusive selection, compared to...

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Data from Figure 4a

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Measured distribution of the $E_{T}^{miss}$ for the $E_{T}^{miss}$ > 250GeV selection compared to the SM predictions. The latter are normalized...

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Data from Figure 4b

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Measured distribution of the leading jet $p_{T}$ for the $E_{T}^{miss}$ > 250GeV selection compared to the SM predictions. The latter...

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Data from Figure 4c

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Measured distribution of the leading jet $|\eta|$ for the $E_{T}^{miss}$ > 250GeV selection compared to the SM predictions. The latter...

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Data from Figure 4d

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Measured distribution of the jet multiplicity for the $E_{T}^{miss}$ > 250GeV selection compared to the SM predictions. The latter are...

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Data from Figure 5a

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The expected $95\%$ CL exclusion limit for a simplified model of dark matter production involving an axial-vector operator, Dirac DM...

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Data from Figure 5a

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The observed $95\%$ CL exclusion limit for a simplified model of dark matter production involving an axial-vector operator, Dirac DM...

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Data from Figure 5b

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The observed $90\%$ CL exclusion limit on the spin-dependent WIMP–proton scattering cross section in the context of the simplified model...

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Data from Figure 6

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The expected $95\%$ CL exclusion limit for a simplified model of dark matter production involving a vector operator, Dirac DM...

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Data from Figure 6

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The observed $95\%$ CL exclusion limit for a simplified model of dark matter production involving a vector operator, Dirac DM...

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Data from Figure 7a

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The expected and observed $95\%$ CL limits on the signal strength $\mu = \sigma^{95\% CL}/\sigma$ as a function of the...

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Data from Figure 7b

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The expected and observed $95\%$ CL limits on the signal strength $\mu = \sigma^{95\% CL}/\sigma$ as a function of the...

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Data from Figure 8

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The expected exclusion contour at $95\%$ CL in the m$_{\eta}$–m$_{\chi}$ parameter plane for the coloured scalar mediator model, with minimal...

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Data from Figure 8

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The observed exclusion contour at $95\%$ CL in the m$_{\eta}$–m$_{\chi}$ parameter plane for the coloured scalar mediator model, with minimal...

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Data from Figure 9a

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Data from Figure 9b

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Data from Figure 10a

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Data from Figure 10b

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Data from Figure 11

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Expected and observed $95\%$ CL lower limits on the fundamental Planck scale in 4+n dimensions, M$_D$, as a function of...

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Data from Figure 4 of the auxiliary material

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Expected and observed $95\%$ CL upper limit on the signal strength $\mu$ in the hypothesis of an axial-vector mediator, g$_{q}=0.25$,...

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Data from Figure 5 of the auxiliary material

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Observed $90\%$ CL exclusion limit on the spin-dependent WIMP–neutron scattering cross section in the context of the simplified model with...

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Data from Figure 6 of the auxiliary material

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Expected and observed $95\%$ CL upper limit on the signal strength $\mu$ in the hypothesis of a pseudoscalar mediator, $g_{q}=g_{\chi}=1.0$...