Summary plots from the ATLAS Exotic physics group

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Summary plots from the ATLAS Exotic physics group
Contact: ATLAS Exotic conveners
Dijet search contours for 95% CL upper limits on the coupling g_q as a function of the resonance mass m_{Z'_A} for the leptophobic axial-vector Z'_A model. The expected limits from each search are indicated by dotted lines. The TLA dijet analysis has two parts, employing different datasets with different selections in the rapidity difference y^* as indicated. The yellow contour shows the results of the dijet search using 20.3 fb^-1 of 8 TeV data. Coupling values above the solid lines are excluded, as long as the signals are narrow enough to be detected using these searches. The TLA dijet search with \|y^\|<0.6 is sensitive up to Γ/m_Z' = 7%, the TLA dijet with \|y^\|<0.3 and dijet + ISR searches are sensitive up to Γ/m_Z' =10%, and the dijet and dibjet searches are sensitive up to Γ/m_Z' = 15%. The dijet angular analysis is sensitive up to Γ/m_Z' = 50%. No limitation in sensitivity arises from large width resonances in the tt̄ resonance analysis. Benchmark width lines are indicated in the canvas. The Γ/m_Z' = 50% lies beyond the canvas borders. png 232kB, pdf 49kB This and previous plot versions
Regions in a (mediator-mass, DM-mass) plane excluded at 95% CL by visible and invisible searches, for leptophobic axial-vector mediator simplified models. The exclusions are computed for a DM coupling g_χ, quark coupling g_q, universal to all flavours, and lepton coupling g_ℓ; as indicated in each case. Dashed curves labelled ``thermal relic" correspond to combinations of DM and mediator mass values that are consistent with a DM density of Ω h²= 0.12 and a standard thermal history, as computed in MadDM [arXiv:1703.05703,arXiv:1509.03683]. Between the two curves, annihilation processes described by the simplified model deplete Ω h² to below 0.12 . A dotted line indicates the kinematic threshold where the mediator can decay on-shell into DM. Excluded regions that are in tension with the perturbative unitary considerations of [arXiv:1510.02110] are indicated by shading in the upper left corner. png 63kB, pdf 165kB This and previous plot versions
Regions in a (mediator-mass, DM-mass) plane excluded at 95% CL by visible and invisible searches, for leptophilic axial-vector mediator simplified models. The exclusions are computed for a DM coupling g_χ, quark coupling g_q, universal to all flavours, and lepton coupling g_ℓ; as indicated in each case. Dashed curves labelled ``thermal relic" correspond to combinations of DM and mediator mass values that are consistent with a DM density of Ω h²= 0.12 and a standard thermal history, as computed in MadDM [arXiv:1703.05703,arXiv:1509.03683]. Between the two curves, annihilation processes described by the simplified model deplete Ω h² to below 0.12 . A dotted line indicates the kinematic threshold where the mediator can decay on-shell into DM. Excluded regions that are in tension with the perturbative unitary considerations of [arXiv:1510.02110] are indicated by shading in the upper left corner. png 48kB, pdf 49kB This and previous plot versions
Regions in a (mediator-mass, DM-mass) plane excluded at 95% CL by dijet, dilepton and E_T^miss+X searches, for leptophobic vector mediator simplified models. The exclusions are computed for a DM coupling g_χ, quark coupling g_q, universal to all flavours, and lepton coupling g_ℓ; as indicated in each case. Dashed curves labelled ``thermal relic" correspond to combinations of DM and mediator mass values that are consistent with a DM density of Ω h²= 0.12 and a standard thermal history as computed in MadDM [arXiv:1703.05703,arXiv:1509.03683]. Above the curve in (a) annihilation processes described by the simplified model deplete Ω h² to below 0.12. In (b), this occurs between the two dashed curves. The dotted line indicates the kinematic threshold where the mediator can decay on-shell into DM. png 41kB, pdf 157kB This and previous plot versions
Regions in a (mediator-mass, DM-mass) plane excluded at 95% CL by dijet, dilepton and E_T^miss+X searches, for leptophilic vector mediator simplified models. The exclusions are computed for a DM coupling g_χ, quark coupling g_q, universal to all flavours, and lepton coupling g_ℓ; as indicated in each case. Dashed curves labelled ``thermal relic" correspond to combinations of DM and mediator mass values that are consistent with a DM density of Ω h²= 0.12 and a standard thermal history as computed in MadDM [arXiv:1703.05703,arXiv:1509.03683]. Above the curve in (a) annihilation processes described by the simplified model deplete Ω h² to below 0.12. In (b), this occurs between the two dashed curves. The dotted line indicates the kinematic threshold where the mediator can decay on-shell into DM. png 30kB, pdf 31kB This and previous plot versions
A comparison of the inferred limits with the constraints from direct detection experiments on (a) the spin-dependent WIMP--neutron or (b) WIMP--proton scattering cross-section in the context of the Z'-like simplified model with axial-vector couplings. The results from this analysis, excluding the region to the left of the contour, are compared with limits from direct detection experiments. LHC limits are shown at 95% CL and direct detection limits at 90% CL. The comparison is valid solely in the context of this model, assuming a mediator width fixed by the dark matter mass and coupling values g_q= 0.1, g_#8467;= 0.1, and g_χ = 1. LHC searches and direct detection experiments exclude the shaded areas. Exclusions of smaller scattering cross-sections do not imply that larger scattering cross-sections are also excluded. The resonance and E_T^miss+X exclusion region represents the union of exclusions from all analyses of that type. png 184kB, pdf 347kB This and previous plot versions
A comparison of the inferred limits with the constraints from direct detection experiments on (a) the spin-dependent WIMP--neutron or (b) WIMP--proton scattering cross-section in the context of the Z'-like simplified model with axial-vector couplings. The results from this analysis, excluding the region to the left of the contour, are compared with limits from direct detection experiments. LHC limits are shown at 95% CL and direct detection limits at 90% CL. The comparison is valid solely in the context of this model, assuming a mediator width fixed by the dark matter mass and coupling values g_q= 0.1, g_ℓ= 0.1, and g_χ = 1. LHC searches and direct detection experiments exclude the shaded areas. Exclusions of smaller scattering cross-sections do not imply that larger scattering cross-sections are also excluded. The resonance and E_T^miss+X exclusion region represents the union of exclusions from all analyses of that type. png 189kB, pdf 347kB This and previous plot versions
A comparison of the inferred limits with the constraints from direct detection experiments on the spin-independent WIMP--nucleon (spin-dependent WIMP--neutron) scattering cross-section in the context of (a) the Z'-like simplified model with leptophilic vector or (b) axial-vector couplings. The results from this analysis, excluding the region to the left of the contour, are compared with limits from the direct detection experiments. LHC limits are shown at 95% CL and direct detection limits at 90% CL. The comparison is valid solely in the context of this model, assuming a mediator width fixed by the dark matter mass and the coupling values highlighted in each figure. LHC searches and direct detection experiments exclude the shaded areas. Exclusions of smaller scattering cross-sections do not imply that larger scattering cross-sections are also excluded. The resonance and E_T^miss+X exclusion region represents the union of exclusions from all analyses of that type. png 145kB, pdf 81kB This and previous plot versions
A comparison of the inferred limits with the constraints from direct detection experiments on the spin-independent WIMP--nucleon (spin-dependent WIMP--neutron) scattering cross-section in the context of (a) the Z'-like simplified model with leptophilic vector or (b) axial-vector couplings. The results from this analysis, excluding the region to the left of the contour, are compared with limits from the direct detection experiments. LHC limits are shown at 95% CL and direct detection limits at 90% CL. The comparison is valid solely in the context of this model, assuming a mediator width fixed by the dark matter mass and the coupling values highlighted in each figure. LHC searches and direct detection experiments exclude the shaded areas. Exclusions of smaller scattering cross-sections do not imply that larger scattering cross-sections are also excluded. The resonance and E_T^miss+X exclusion region represents the union of exclusions from all analyses of that type. png 205kB, pdf 77kB This and previous plot versions
Observed 95% CL exclusion contours in the HVT parameter space {g_H, g_f} for resonances of mass 3, 4, and 5 TeV for the combination of VV, VH, and ℓν/ℓℓ channels. The areas outside the curves are excluded, as are the filled regions which show the constraints from precision EW measurements. Also shown are the parameters for models A and B, where applicable. png 106kB, pdf 17kB, eps 61kB This and previous plot versions
Observed 95% CL exclusion contours in the HVT parameter space {g_q, g_ℓ} for resonances of mass 3, 4, and 5 TeV for the combination of VV, VH, and ℓν/ℓℓ channels. The areas outside the curves are excluded, as are the filled regions which show the constraints from precision EW measurements. Also shown are the parameters for models A and B, where applicable. png 113kB, pdf 14kB, eps 50kB This and previous plot versions
Reach in ctau of ATLAS searches for new phenomena. Only a representative selection of the available results is shown. Green (yellow) bands indicate 8 TeV (13 TeV) data results Status of figure: Mar 2019 png 356kB, pdf 37kB, eps 358kB This and previous plot versions
Reach of ATLAS searches for new phenomena other than Supersymmetry. Only a representative selection of the available results is shown. Green bands indicate 8 TeV data results; yellow (orange) bands indicate 13 TeV data results with partial (full) dataset. Status of figure: Mar 2019 png 526kB, pdf 49kB, eps 396kB This and previous plot versions
Observed (filled area) and expected (dashed line) 95% CL exclusion in the plane of BR(B → Hb) versus BR(B → Wt), for different values of the vector-like B quark mass for the various analyses contributing to the BB̄ combination, assuming that the SM branching ratios sum to unity. In the figure, the branching ratio is denoted ``BR". The grey (light shaded) area corresponds to the unphysical region where the sum of branching ratios exceeds unity, or is smaller than zero. The default branching ratio values from the Protos event generator [1] for the weak-isospin singlet, (T,B) and (B,Y) doublet cases are shown as plain circle, cross and star symbols, respectively. A description of the combination and individual results can be found in arXiv:1808.02343. [1] J. A. Aguilar-Saavedra, PROTOS, a PROgram for TOp Simulations, http://jaguilar.web.cern.ch/jaguilar/protos/ png 74kB, pdf 31kB This and previous plot versions
Observed (filled area) and expected (dashed line) 95% CL exclusion in the plane of BR(T → Ht) versus BR(T → Wb), for different values of the vector-like T quark mass for the various analyses contributing to the TT̄ combination, assuming that the SM branching ratios sum to unity. In the figure, the branching ratio is denoted ``BR". The grey (light shaded) area corresponds to the unphysical region where the sum of branching ratios exceeds unity, or is smaller than zero. The default branching ratio values from the Protos event generator [1] for the weak-isospin singlet and doublet cases are shown as plain circle and star symbols, respectively. A description of the combination and individual results can be found in arXiv:1808.02343. [1] J. A. Aguilar-Saavedra, PROTOS, a PROgram for TOp Simulations, http://jaguilar.web.cern.ch/jaguilar/protos/ png 88kB, pdf 36kB This and previous plot versions

ATLAS Collaboration, 2019