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Search for new particles in events with one lepton and missing transverse momentum in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector

The ATLAS collaboration
JHEP 1409 (2014) 037, 2014

Abstract (data abstract)
CERN-LHC. This paper presents a search for new particles in events with one lepton (electron or muon) and missing transverse momentum using 20.3 fb-1 of proton-proton collision data at sqrt(s)=8 TeV recorded by the ATLAS experiment at the Large Hadron Collider. No significant excess beyond Standard Model expectations is observed. A WPRIME with Sequential Standard Model couplings is excluded at the 95% confidence level for masses up to 3.24 TeV. Excited chiral bosons (W*) with equivalent coupling strengths are excluded for masses up to 3.21 TeV. In the framework of an effective field theory limits are also set on the dark matter-nucleon scattering cross-section as well as the mass scale M* of the unknown mediating interaction for dark matter pair production in association with a leptonically decaying W.

  • Table 1

    Data from Figure 1a

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    Spectrum of lepton PT for the electron channel after the event selection. The spectrum is shown with the requirement MT...

  • Table 2

    Data from Figure 1b

    10.17182/hepdata.65524.v1/t2

    Spectrum of lepton PT for the muon channel after the event selection. The spectrum is shown with the requirement MT...

  • Table 3

    Data from Figure 1c

    10.17182/hepdata.65524.v1/t3

    Spectrum of ETmiss for the electron channel after the event selection. The spectrum is shown with the requirement MT >...

  • Table 4

    Data from Figure 1d

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    Spectrum of ETmiss for the muon channel after the event selection. The spectrum is shown with the requirement MT >...

  • Table 5

    Data from Figure 1e

    10.17182/hepdata.65524.v1/t5

    Spectrum of MT for the electron channel after the event selection.

  • Table 6

    Data from Figure 1f

    10.17182/hepdata.65524.v1/t6

    Spectrum of MT for the muon channel after the event selection.

  • Table 7

    Data from Figure 2a

    10.17182/hepdata.65524.v1/t7

    Observed and expected limits on SIGMA*B for WPRIME at 95% CL in the electron channel.

  • Table 8

    Data from Figure 2b

    10.17182/hepdata.65524.v1/t8

    Observed and expected limits on SIGMA*B for W* at 95% CL in the electron channel.

  • Table 9

    Data from Figure 2c

    10.17182/hepdata.65524.v1/t9

    Observed and expected limits on SIGMA*B for WPRIME at 95% CL in the muon channel.

  • Table 10

    Data from Figure 2d

    10.17182/hepdata.65524.v1/t10

    Observed and expected limits on SIGMA*B for W* at 95% CL in the muon channel.

  • Table 11

    Data from Figure 2e

    10.17182/hepdata.65524.v1/t11

    Observed and expected limits on SIGMA*B for WPRIME at 95% CL for the combination of the electron and muon channels.

  • Table 12

    Data from Figure 2f

    10.17182/hepdata.65524.v1/t12

    Observed and expected limits on SIGMA*B for W* at 95% CL for the combination of the electron and muon channels.

  • Table 13

    Data from Figure 3

    10.17182/hepdata.65524.v1/t13

    Observed limits on M* as a function of the DM particle mass M(chi) at 90% CL for the combination of...

  • Table 14

    Data from Figure 4

    10.17182/hepdata.65524.v1/t14

    Observed limits on the DM-nucleon scattering cross-section as a function of M(chi) at 90% CL for various operators in the...

  • Table 15

    Data from Auxiliary Figure 5a

    10.17182/hepdata.65524.v1/t15

    Observed limits on M* as a function of the DM particle mass M(chi) at 90% CL in the electron for...

  • Table 16

    Data from Auxiliary Figure 5b

    10.17182/hepdata.65524.v1/t16

    Observed limits on M* as a function of the DM particle mass M(chi) at 90% CL in the muon for...

  • Table 17

    Data from Auxiliary Figure 5c

    10.17182/hepdata.65524.v1/t17

    Observed limits on M* as a function of the DM particle mass M(chi) at 95% CL in the electron for...

  • Table 18

    Data from Auxiliary Figure 5d

    10.17182/hepdata.65524.v1/t18

    Observed limits on M* as a function of the DM particle mass M(chi) at 95% CL in the muon for...

  • Table 19

    Data from Auxiliary Figure 5e

    10.17182/hepdata.65524.v1/t19

    Observed limits on M* as a function of the DM particle mass M(chi) at 95% CL for the combination of...

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