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Search for direct pair production of a chargino and a neutralino decaying to the 125 GeV Higgs boson in $\sqrt{s} = 8$  TeV ${pp}$ collisions with the ATLAS detector

The ATLAS collaboration
Eur.Phys.J. C75 (2015) 208, 2015

Abstract (data abstract)
CERN-LHC. A search is presented for the direct pair production of a chargino and a neutralino $pp\to\tilde{\chi}^\pm_1\tilde{\chi}^0_2$, where the chargino decays to the lightest neutralino and the $W$ boson, $\tilde{\chi}^\pm_1 \to \tilde{\chi}^0_1 (W^{\pm}\to\ell^{\pm}\nu)$, while the neutralino decays to the lightest neutralino and the 125 GeV Higgs boson, $\tilde{\chi}^0_2 \to \tilde{\chi}^0_1 (h\to bb/\gamma\gamma/\ell^{\pm}\nu qq)$. The final states considered for the search have large missing transverse momentum, an isolated electron or muon, and one of the following: either two jets identified as originating from bottom quarks, or two photons, or a second electron or muon with the same electric charge. The analysis is based on 20.3 fb$^{-1}$ of $\sqrt{s}=8$ TeV proton-proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with the Standard Model expectations, and limits are set in the context of a simplified supersymmetric model.

  • Table 1

    Data from Figure 2a

    10.17182/hepdata.68405.v1/t1

    Distribution of contransverse mass $m_{\rm CT}$ in CRlbb-T, central $m_{bb}$ bin. The background histograms are obtained from the background-only fit,...

  • Table 2

    Data from Figure 2b

    10.17182/hepdata.68405.v1/t2

    Distribution of contransverse mass $m_{\rm CT}$ in SRlbb-1 and SRlbb-2, $m_{bb}$ sideband. The background histograms are obtained from the background-only...

  • Table 3

    Data from Figure 2c

    10.17182/hepdata.68405.v1/t3

    Distribution of the transverse mass of the $W$-candidate $m_{\rm T}^{W}$ for the one lepton and two $b$-jets channel in VRlbb-2,...

  • Table 4

    Data from Figure 2d

    10.17182/hepdata.68405.v1/t4

    Distribution of the transverse mass of the $W$-candidate $m_{\rm T}^{W}$ for the one lepton and two $b$-jets channel in SRlbb-1...

  • Table 5

    Data from Figure 2e

    10.17182/hepdata.68405.v1/t5

    Distribution of the number of $b$-jets for the one lepton and two $b$-jets channel in SRlbb-1 and SRlbb-2 without the...

  • Table 6

    Data from Figure 2f

    10.17182/hepdata.68405.v1/t6

    Distribution of the invariant mass of the $b$-jets $m_{bb}$ for the one lepton and two $b$-jets channel in the SRlbb-1...

  • Table 7

    Data from Figure 3a

    10.17182/hepdata.68405.v1/t7

    Distribution of missing transverse momentum $E_{\rm T}^{\rm miss}$ in the one lepton and two photons signal regions SR$\ell\gamma\gamma$-1 and SR$\ell\gamma\gamma$-2...

  • Table 8

    Data from Figure 3b

    10.17182/hepdata.68405.v1/t8

    Distribution of the azimuth difference between the $W$ and Higgs boson candidates $\Delta\phi(W,h)$ in the one lepton and two photons...

  • Table 9

    Data from Figure 3c

    10.17182/hepdata.68405.v1/t9

    Distribution of the transverse mass of the $W$ and photon system $m_{\rm{T}}^{W\gamma_1}$ in the one lepton and two photons signal...

  • Table 10

    Data from Figure 3d

    10.17182/hepdata.68405.v1/t10

    Distribution of the transverse mass of the $W$ and photon system $m_{\rm{T}}^{W\gamma_2}$ in the one lepton and two photons signal...

  • Table 11

    Data from Figure 4a

    10.17182/hepdata.68405.v1/t11

    Results of the background-only fit to the diphoton invariant mass, $m_{\gamma\gamma}$, distribution in the one lepton and two photons signal...

  • Table 12

    Data from Figure 4b

    10.17182/hepdata.68405.v1/t12

    Results of the background-only fit to the diphoton invariant mass, $m_{\gamma\gamma}$, distribution in the one lepton and two photons signal...

  • Table 13

    Data from Figure 4c

    10.17182/hepdata.68405.v1/t13

    Results of the background-only fit to the diphoton invariant mass, $m_{\gamma\gamma}$, distribution in the one lepton and two photons validation...

  • Table 14

    Data from Figure 4d

    10.17182/hepdata.68405.v1/t14

    Results of the background-only fit to the diphoton invariant mass, $m_{\gamma\gamma}$, distribution in the one lepton and two photons validation...

  • Table 15

    Data from Figure 5

    10.17182/hepdata.68405.v1/t15

    Distribution of effective mass $m_{\rm eff}$ in the validation region of the same-sign $e\mu$ channel. This validation region is defined...

  • Table 16

    Data from Figure 6a

    10.17182/hepdata.68405.v1/t16

    Distribution of effective mass $m_{\rm eff}$ for the same-sign dilepton channel in the signal regions with one jet SR$ll$-1. SR$ll$-1...

  • Table 17

    Data from Figure 6b

    10.17182/hepdata.68405.v1/t17

    Distribution of effective mass $m_{\rm eff}$ for the same-sign dilepton channel in the signal regions with two or three jets...

  • Table 18

    Data from Figure 6c

    10.17182/hepdata.68405.v1/t18

    Distribution of largest transverse mass $m_{\rm T}^{\rm max}$ for the same-sign dilepton channel in the signal regions with one jet...

  • Table 19

    Data from Figure 6d

    10.17182/hepdata.68405.v1/t19

    Distribution of largest transverse mass $m_{\rm T}^{\rm max}$ for the same-sign dilepton channel in the signal regions with two or...

  • Table 20

    Data from Figure 6e

    10.17182/hepdata.68405.v1/t20

    Distribution of invariant mass of lepton and jet $m_{lj}$ for the same-sign dilepton channel in the signal regions with one...

  • Table 21

    Data from Figure 6f

    10.17182/hepdata.68405.v1/t21

    Distribution of invariant mass of lepton and di-jet $m_{ljj}$ for the same-sign dilepton channel in the signal regions with two...

  • Table 22

    Data from Figure 7a

    10.17182/hepdata.68405.v1/t22

    One lepton and two $b$-jets channel: observed and expected 95% CL upper limits on the cross section normalised by the...

  • Table 23

    Data from Figure 7b

    10.17182/hepdata.68405.v1/t23

    One lepton and two photons channel: observed and expected 95% CL upper limits on the cross section normalised by the...

  • Table 24

    Data from Figure 7 c

    10.17182/hepdata.68405.v1/t24

    Same-sign dilepton channel: observed and expected 95% CL upper limits on the cross section normalised by the simplified model prediction...

  • Table 25

    Data from Figure 7d

    10.17182/hepdata.68405.v1/t25

    Combination: observed and expected 95% CL upper limits on the cross section normalised by the simplified model prediction as a...

  • Table 26

    Data from Figure 8a

    10.17182/hepdata.68405.v1/t26

    One lepton and two b-jets channel: Expected 95% CL exclusion contour for chargino neutralino production via Wh.

  • Table 27

    Data from Figure 8a

    10.17182/hepdata.68405.v1/t27

    One lepton and two b-jets channel: Observed 95% CL exclusion contour for chargino neutralino production via Wh.

  • Table 28

    Data from Figure 8b

    10.17182/hepdata.68405.v1/t28

    One lepton and two photons channel: Expected 95% CL exclusion contour for chargino neutralino production via Wh.

  • Table 29

    Data from Figure 8b

    10.17182/hepdata.68405.v1/t29

    One lepton and two photons channel: Observed 95% CL exclusion contour for chargino neutralino production via Wh.

  • Table 30

    Data from Figure 8c

    10.17182/hepdata.68405.v1/t30

    Same-sign dilepton channel: Expected 95% CL exclusion contour for chargino neutralino production via Wh.

  • Table 31

    Data from Figure 8c

    10.17182/hepdata.68405.v1/t31

    Same-sign dilepton channel: Observed 95% CL exclusion contour for chargino neutralino production via Wh.

  • Table 32

    Data from Figure 8d

    10.17182/hepdata.68405.v1/t32

    Combination: Expected 95% CL exclusion contour for chargino neutralino production via Wh.

  • Table 33

    Data from Figure 8d

    10.17182/hepdata.68405.v1/t33

    Combination: Observed 95% CL exclusion contour for chargino neutralino production via Wh.

  • Table 34

    Data from Figure Aux 1

    10.17182/hepdata.68405.v1/t34

    Combination: excluded model cross-section at 95% CL IN PB.

  • Table 35

    Data from Figure Aux 14a

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    Acceptance SR$\ell\gamma\gamma$-1.

  • Table 36

    Data from Figure Aux 14b

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    Acceptance SR$\ell\gamma\gamma$-2.

  • Table 37

    Data from Figure Aux 15a

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    Efficiency SR$\ell\gamma\gamma$-1.

  • Table 38

    Data from Figure Aux 15b

    10.17182/hepdata.68405.v1/t38

    Efficiency SR$\ell\gamma\gamma$-2.

  • Table 39

    Data from Figure Aux 19a

    10.17182/hepdata.68405.v1/t39

    $m_{\gamma\gamma}$ distribution in the SR$l\gamma\gamma$-1 region for the full $m_{\gamma\gamma}$ window. The last column (background) is from a simulation-based cross...

  • Table 40

    Data from Figure Aux 19b

    10.17182/hepdata.68405.v1/t40

    $m_{\gamma\gamma}$ distribution in the SR$l\gamma\gamma$-2 region for the full $m_{\gamma\gamma}$ window. The last column (background) is from a simulation-based cross...

  • Table 41

    Data from Figure Aux 19c

    10.17182/hepdata.68405.v1/t41

    $m_{\gamma\gamma}$ distribution in the VR$l\gamma\gamma$-1 region for the full $m_{\gamma\gamma}$ window. The last column (background) is from a simulation-based cross...

  • Table 42

    Data from Figure Aux 19d

    10.17182/hepdata.68405.v1/t42

    $m_{\gamma\gamma}$ distribution in the VR$l\gamma\gamma$-2 region for the full $m_{\gamma\gamma}$ window. The last column (background) is from a simulation-based cross...

  • Table 43

    Data from Figure Aux 4a

    10.17182/hepdata.68405.v1/t43

    Acceptance for SRlbb-1, central $m_{bb}$ bin.

  • Table 44

    Data from Figure Aux 4b

    10.17182/hepdata.68405.v1/t44

    Acceptance for SRlbb-1, $m_{bb}$ sideband.

  • Table 45

    Data from Figure Aux 4c

    10.17182/hepdata.68405.v1/t45

    Acceptance for SRlbb-2, central $m_{bb}$ bin.

  • Table 46

    Data from Figure Aux 4d

    10.17182/hepdata.68405.v1/t46

    Acceptance for SRlbb-2, $m_{bb}$ sideband.

  • Table 47

    Data from Figure Aux 5a

    10.17182/hepdata.68405.v1/t47

    Efficiency for SRlbb-1, central $m_{bb}$ bin.

  • Table 48

    Data from Figure Aux 5b

    10.17182/hepdata.68405.v1/t48

    Efficiency for SRlbb-1, $m_{bb}$ sideband.

  • Table 49

    Data from Figure Aux 5c

    10.17182/hepdata.68405.v1/t49

    Efficiency for SRlbb-2, central $m_{bb}$ bin.

  • Table 50

    Data from Figure Aux 5d

    10.17182/hepdata.68405.v1/t50

    Efficiency for SRlbb-2, $m_{bb}$ sideband.

  • Table 51

    Data from Figure Aux 8a

    10.17182/hepdata.68405.v1/t51

    Acceptance for the same-sign $ee$ channel with one jet.

  • Table 52

    Data from Figure Aux 8b

    10.17182/hepdata.68405.v1/t52

    Acceptance for the same-sign $ee$ channel with two or three jets.

  • Table 53

    Data from Figure Aux 8c

    10.17182/hepdata.68405.v1/t53

    Acceptance for the same-sign $e\mu$ channel with one jet.

  • Table 54

    Data from Figure Aux 8d

    10.17182/hepdata.68405.v1/t54

    Acceptance for the same-sign $e\mu$ channel with two or three jets.

  • Table 55

    Data from Figure Aux 8e

    10.17182/hepdata.68405.v1/t55

    Acceptance for the same-sign $\mu\mu$ channel with one jet.

  • Table 56

    Data from Figure Aux 8f

    10.17182/hepdata.68405.v1/t56

    Acceptance for the same-sign $\mu\mu$ channel with two or three jets.

  • Table 57

    Data from Figure Aux 9a

    10.17182/hepdata.68405.v1/t57

    Efficiency for the same-sign $ee$ channel with one jet.

  • Table 58

    Data from Figure Aux 9b

    10.17182/hepdata.68405.v1/t58

    Efficiency for the same-sign $ee$ channel with two or three jets.

  • Table 59

    Data from Figure Aux 9c

    10.17182/hepdata.68405.v1/t59

    Efficiency for the same-sign $e\mu$ channel with one jet.

  • Table 60

    Data from Figure Aux 9d

    10.17182/hepdata.68405.v1/t60

    Efficiency for the same-sign $e\mu$ channel with two or three jets.

  • Table 61

    Data from Figure Aux 9e

    10.17182/hepdata.68405.v1/t61

    Efficiency for the same-sign $\mu\mu$ channel with one jet.

  • Table 62

    Data from Figure Aux 9f

    10.17182/hepdata.68405.v1/t62

    Efficiency for the same-sign $\mu\mu$ channel with two or three jets.

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