Search for heavy Majorana or Dirac neutrinos and right-handed $W$ gauge bosons in final states with two charged leptons and two jets at $\sqrt{s}$ = 13 TeV with the ATLAS detector

The ATLAS collaboration
No Journal Information, 2018

Abstract (data abstract)
CERN-LHC. A search for heavy right-handed Majorana or Dirac neutrinos and heavy right-handed $W$ gauge bosons is performed in events with a pair of energetic electrons or muons, with the same or opposite electric charge, and two energetic jets. The events are selected from $pp$ collision data with an integrated luminosity of 36 fb$^{-1}$ collected by the ATLAS detector at a centre-of-mass energy of 13 TeV. No significant deviations from the Standard Model are observed. The results are interpreted within the theoretical framework of a left-right symmetric model and lower mass limits are set in the heavy right-handed W and neutrino mass plane. The excluded region extends to $m_{W_R}~= 4.7$ TeV for both Majorana and Dirac $N_R$ neutrinos.

  • Table 1

    Data from Figure 7a

    10.17182/hepdata.83786.v1/t1

    Expected 95% CL exclusion contour in the $m_{W_R}–m_{N_R}$ plane for the Majorana $N_R$ neutrino $ee$ channel.

  • Table 2

    Data from Figure 7a

    10.17182/hepdata.83786.v1/t2

    Observed 95% CL exclusion contour in the $m_{W_R}–m_{N_R}$ plane for the Majorana $N_R$ neutrino $ee$ channel.

  • Table 3

    Data from Figure 7a

    10.17182/hepdata.83786.v1/t3

    Observed and expected 95% CL exclusion, for the tested signal mass hypotheses in the $m_{W_R}–m_{N_R}$ plane, for the Majorana $N_R$...

  • Table 4

    Data from Figure 7b

    10.17182/hepdata.83786.v1/t4

    Expected 95% CL exclusion contour in the $m_{W_R}–m_{N_R}$ plane for the Majorana $N_R$ neutrino $\mu\mu$ channel.

  • Table 5

    Data from Figure 7b

    10.17182/hepdata.83786.v1/t5

    Observed 95% CL exclusion contour in the $m_{W_R}–m_{N_R}$ plane for the Majorana $N_R$ neutrino $\mu\mu$ channel.

  • Table 6

    Data from Figure 7b

    10.17182/hepdata.83786.v1/t6

    Observed and expected 95% CL exclusion, for the tested signal mass hypotheses in the $m_{W_R}–m_{N_R}$ plane, for the Majorana $N_R$...

  • Table 7

    Data from Figure 7c

    10.17182/hepdata.83786.v1/t7

    Expected 95% CL exclusion contour in the $m_{W_R}–m_{N_R}$ plane for the Dirac $N_R$ neutrino $ee$ channel.

  • Table 8

    Data from Figure 7c

    10.17182/hepdata.83786.v1/t8

    Observed 95% CL exclusion contour in the $m_{W_R}–m_{N_R}$ plane for the Dirac $N_R$ neutrino $ee$ channel.

  • Table 9

    Data from Figure 7c

    10.17182/hepdata.83786.v1/t9

    Observed and expected 95% CL exclusion, for the tested signal mass hypotheses in the $m_{W_R}–m_{N_R}$ plane, for the Dirac $N_R$...

  • Table 10

    Data from Figure 7d

    10.17182/hepdata.83786.v1/t10

    Expected 95% CL exclusion contour in the $m_{W_R}–m_{N_R}$ plane for the Dirac $N_R$ neutrino $\mu\mu$ channel.

  • Table 11

    Data from Figure 7d

    10.17182/hepdata.83786.v1/t11

    Observed 95% CL exclusion contour in the $m_{W_R}–m_{N_R}$ plane for the Dirac $N_R$ neutrino $\mu\mu$ channel.

  • Table 12

    Data from Figure 7d

    10.17182/hepdata.83786.v1/t12

    Observed and expected 95% CL exclusion, for the tested signal mass hypotheses in the $m_{W_R}–m_{N_R}$ plane, for the Dirac $N_R$...

  • Table 13

    Data from Figure 10 in auxiliary material

    10.17182/hepdata.83786.v1/t13

    Observed 95% CL upper limit on cross-section times branching ratio to the $ee$ final state for the Keung-Senjanovic process in...

  • Table 14

    Data from Figure 11 in auxiliary material

    10.17182/hepdata.83786.v1/t14

    Observed 95% CL upper limit on cross-section times branching ratio to the $\mu\mu$ final state for the Keung-Senjanovic process in...

  • Table 15

    Data from Figure 12 in auxiliary material

    10.17182/hepdata.83786.v1/t15

    Observed 95% CL upper limit on cross-section times branching ratio to the $\mu\mu$ final state for the Keung-Senjanovic process in...

  • Table 16

    Data from Figure 13 in auxiliary material

    10.17182/hepdata.83786.v1/t16

    Observed 95% CL upper limit on cross-section times branching ratio to the $\mu\mu$ final state for the Keung-Senjanovic process in...

  • Table 17

    Data from Figure 14a in auxiliary material

    10.17182/hepdata.83786.v1/t17

    Efficiencies times acceptance for signal region selection as a function of the signal $W_R$ and $N_R$ masses for the SS...

  • Table 18

    Data from Figure 14b in auxiliary material

    10.17182/hepdata.83786.v1/t18

    Efficiencies times acceptance for signal region selection as a function of the signal $W_R$ and $N_R$ masses for the SS...

  • Table 19

    Data from Figure 14c in auxiliary material

    10.17182/hepdata.83786.v1/t19

    Efficiencies times acceptance for signal region selection as a function of the signal $W_R$ and $N_R$ masses for the OS...

  • Table 20

    Data from Figure 14d in auxiliary material

    10.17182/hepdata.83786.v1/t20

    Efficiencies times acceptance for signal region selection as a function of the signal $W_R$ and $N_R$ masses for the OS...

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