Search for long-lived neutral particles produced in $pp$ collisions at $\sqrt{s} = 13$ TeV decaying into displaced hadronic jets in the ATLAS inner detector and muon spectrometer

The ATLAS collaboration
2019.

Abstract (data abstract)
CERN-LHC. A search is presented for long-lived neutral particles using 33 fb$^{-1}$ of $\sqrt{s} = 13$ TeV proton-proton collision data, collected during 2016 by the ATLAS detector at the LHC. This search focuses on a topology in which one long-lived particle decays in the ATLAS inner detector and the other decays in the muon spectrometer. Special techniques are required in order to reconstruct the displaced tracks and vertices in the inner detector and in the muon spectrometer. One event is observed that passes the full event selection, which is consistent with the background estimation. Limits are placed on scalar boson propagators of masses from 125 GeV to 1000 GeV decaying to pairs of hidden sector scalars of masses from 8 GeV to 400 GeV. The limits placed on several low mass scalars extend previous exclusion limits in the range of proper lifetimes from 5 cm to 1 m.

  • Table 1

    Data from Figure 3A

    10.17182/hepdata.92075.v1/t1

    IDVx selection efficiency as a function of the radial decay position for $m_H = 125$ GeV.

  • Table 2

    Data from Figure 3B

    10.17182/hepdata.92075.v1/t2

    IDVx selection efficiency as a function of the radial decay position for $m_s = 50$ GeV.

  • Table 3

    Data from Figure 4A

    10.17182/hepdata.92075.v1/t3

    Observed $CL_S$ limits on $BR$ for $m_H = 125$ GeV.

  • Table 4

    Data from Figure 4B

    10.17182/hepdata.92075.v1/t4

    Observed $CL_S$ limits on $\sigma \times BR$ for $m_{\Phi} = 200-400$ GeV.

  • Table 5

    Data from Figure 4C

    10.17182/hepdata.92075.v1/t5

    Observed $CL_S$ limits on $\sigma \times BR$ for $m_{\Phi} = 600-1000$ GeV.

  • Table 6

    Data from Figure 5A

    10.17182/hepdata.92075.v1/t6

    Combined limits from this analysis (ID) and the CR and MS analyses for $m_{H} = 125$ GeV, $m_s = 15$...

  • Table 7

    Data from Figure 5B

    10.17182/hepdata.92075.v1/t7

    Combined limits from this analysis (ID) and the CR and MS analyses for $m_{H} = 125$ GeV, $m_s = 25$...

  • Table 8

    Data from Figure 5C

    10.17182/hepdata.92075.v1/t8

    Combined limits from this analysis (ID) and the CR and MS analyses for $m_{H} = 125$ GeV, $m_s = 40$...

  • Table 9

    Data from Figure 5D

    10.17182/hepdata.92075.v1/t9

    Combined limits from this analysis (ID) and the CR and MS analyses for $m_{H} = 125$ GeV, $m_s = 55$...

  • Table 10

    Data from Figure 6A

    10.17182/hepdata.92075.v1/t10

    Combined limits from this analysis (ID) and the CR and MS analyses for $m_{\Phi} = 200$ GeV, $m_s = 25$...

  • Table 11

    Data from Figure 6B

    10.17182/hepdata.92075.v1/t11

    Combined limits from this analysis (ID) and the CR and MS analyses for $m_{\Phi} = 200$ GeV, $m_s = 50$...

  • Table 12

    Data from Auxillary Figure 1A

    10.17182/hepdata.92075.v1/t12

    Comparison of the IDVx reconstruction and selection efficiency for a Higgs with a mass of 125 GeV decaying to an...

  • Table 13

    Data from Auxillary Figure 1B

    10.17182/hepdata.92075.v1/t13

    Comparison of the IDVx reconstruction and selection efficiency for a Higgs with a mass of 125 GeV decaying to an...

  • Table 14

    Data from Auxillary Figure 2A

    10.17182/hepdata.92075.v1/t14

    Comparison of the IDVx reconstruction and selection efficiency for a $\Phi$ with a mass of 1000 GeV decaying to an...

  • Table 15

    Data from Auxillary Figure 2B

    10.17182/hepdata.92075.v1/t15

    Comparison of the IDVx reconstruction and selection efficiency for a $\Phi$ with a mass of 1000 GeV decaying to an...

  • Table 16

    Data from Auxillary Figure 3A

    10.17182/hepdata.92075.v1/t16

    The IDVx selection efficiency as a function of long-lived particle decay $z$ position for MC signal samples with a 125...

  • Table 17

    Data from Auxillary Figure 3B

    10.17182/hepdata.92075.v1/t17

    The IDVx selection efficiency as a function of long-lived particle decay $z$ position for MC signal samples with mediators of...

  • Table 18

    Data from Auxillary Figure 4A

    10.17182/hepdata.92075.v1/t18

    The impact of the IDVx selections on the selection efficiency for the MC signal sample with a Higgs with a...

  • Table 19

    Data from Auxillary Figure 4B

    10.17182/hepdata.92075.v1/t19

    The impact of the IDVx selections on the selection efficiency for the MC signal sample with a Higgs with a...

  • Table 20

    Data from Auxillary Figure 4C

    10.17182/hepdata.92075.v1/t20

    The impact of the IDVx selections on the selection efficiency for the MC signal sample with a Higgs with a...

  • Table 21

    Data from Auxillary Figure 5A

    10.17182/hepdata.92075.v1/t21

    The impact of the IDVx selections on the selection efficiency for the MC signal sample with a $\Phi$ with a...

  • Table 22

    Data from Auxillary Figure 5B

    10.17182/hepdata.92075.v1/t22

    The impact of the IDVx selections on the selection efficiency for the MC signal sample with a $\Phi$ with a...

  • Table 23

    Data from Auxillary Figure 5C

    10.17182/hepdata.92075.v1/t23

    The impact of the IDVx selections on the selection efficiency for the MC signal sample with a $\Phi$ with a...

  • Table 24

    Data from Auxillary Figure 6A

    10.17182/hepdata.92075.v1/t24

    The impact of the IDVx selections on the selection efficiency for the MC signal sample with a $\Phi$ with a...

  • Table 25

    Data from Auxillary Figure 6B

    10.17182/hepdata.92075.v1/t25

    The impact of the IDVx selections on the selection efficiency for the MC signal sample with a $\Phi$ with a...

  • Table 26

    Data from Auxillary Figure 6C

    10.17182/hepdata.92075.v1/t26

    The impact of the IDVx selections on the selection efficiency for the MC signal sample with a $\Phi$ with a...

  • Table 27

    Data from Auxillary Figure 10A

    10.17182/hepdata.92075.v1/t27

    $CL_S$ limits on $B_{H\rightarrow ss}$ for $m_{H} = 125$ GeV, $m_s = 8$ GeV.

  • Table 28

    Data from Auxillary Figure 10B

    10.17182/hepdata.92075.v1/t28

    $CL_S$ limits on $B_{H\rightarrow ss}$ for $m_{H} = 125$ GeV, $m_s = 15$ GeV.

  • Table 29

    Data from Auxillary Figure 10C

    10.17182/hepdata.92075.v1/t29

    $CL_S$ limits on $B_{H\rightarrow ss}$ for $m_{H} = 125$ GeV, $m_s = 25$ GeV.

  • Table 30

    Data from Auxillary Figure 10D

    10.17182/hepdata.92075.v1/t30

    $CL_S$ limits on $B_{H\rightarrow ss}$ for $m_{H} = 125$ GeV, $m_s = 40$ GeV.

  • Table 31

    Data from Auxillary Figure 10E

    10.17182/hepdata.92075.v1/t31

    $CL_S$ limits on $B_{H\rightarrow ss}$ for $m_{H} = 125$ GeV, $m_s = 55$ GeV.

  • Table 32

    Data from Auxillary Figure 11A

    10.17182/hepdata.92075.v1/t32

    $CL_S$ limits on $\sigma \times B_{\Phi\rightarrow ss}$ for $m_{\Phi} = 200$ GeV, $m_s = 8$ GeV.

  • Table 33

    Data from Auxillary Figure 11B

    10.17182/hepdata.92075.v1/t33

    $CL_S$ limits on $\sigma \times B_{\Phi\rightarrow ss}$ for $m_{\Phi} = 200$ GeV, $m_s = 25$ GeV.

  • Table 34

    Data from Auxillary Figure 11C

    10.17182/hepdata.92075.v1/t34

    $CL_S$ limits on $\sigma \times B_{\Phi\rightarrow ss}$ for $m_{\Phi} = 200$ GeV, $m_s = 50$ GeV.

  • Table 35

    Data from Auxillary Figure 12A

    10.17182/hepdata.92075.v1/t35

    $CL_S$ limits on $\sigma \times B_{\Phi\rightarrow ss}$ for $m_{\Phi} = 400$ GeV, $m_s = 50$ GeV.

  • Table 36

    Data from Auxillary Figure 12B

    10.17182/hepdata.92075.v1/t36

    $CL_S$ limits on $\sigma \times B_{\Phi\rightarrow ss}$ for $m_{\Phi} = 400$ GeV, $m_s = 100$ GeV.

  • Table 37

    Data from Auxillary Figure 13A

    10.17182/hepdata.92075.v1/t37

    $CL_S$ limits on $\sigma \times B_{\Phi\rightarrow ss}$ for $m_{\Phi} = 600$ GeV, $m_s = 50$ GeV.

  • Table 38

    Data from Auxillary Figure 13B

    10.17182/hepdata.92075.v1/t38

    $CL_S$ limits on $\sigma \times B_{\Phi\rightarrow ss}$ for $m_{\Phi} = 600$ GeV, $m_s = 150$ GeV.

  • Table 39

    Data from Auxillary Figure 14A

    10.17182/hepdata.92075.v1/t39

    $CL_S$ limits on $\sigma \times B_{\Phi\rightarrow ss}$ for $m_{\Phi} = 1000$ GeV, $m_s = 50$ GeV.

  • Table 40

    Data from Auxillary Figure 14B

    10.17182/hepdata.92075.v1/t40

    $CL_S$ limits on $\sigma \times B_{\Phi\rightarrow ss}$ for $m_{\Phi} = 1000$ GeV, $m_s = 150$ GeV.

  • Table 41

    Data from Auxillary Figure 14C

    10.17182/hepdata.92075.v1/t41

    $CL_S$ limits on $\sigma \times B_{\Phi\rightarrow ss}$ for $m_{\Phi} = 1000$ GeV, $m_s = 400$ GeV.

Loading Data...

Ask a Question


Your question will be emailed to those involved with the submission. Please mention the relevant table.


Please log in to HEPData to send a question.